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11571793948 = 22111323879583
BaseRepresentation
bin10101100011011101…
…11001000000011100
31002212110101001002001
422301232321000130
5142144334401243
65152131412044
7556521424411
oct126156710034
932773331061
1011571793948
1149a8a81080
1222ab454024
131125528970
147babd4108
1547ad89a4d
hex2b1bb901c

11571793948 has 48 divisors (see below), whose sum is σ = 24825378816. Its totient is φ = 4644192960.

The previous prime is 11571793943. The next prime is 11571793951. The reversal of 11571793948 is 84939717511.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571793943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426636 + ... + 452947.

It is an arithmetic number, because the mean of its divisors is an integer number (517195392).

Almost surely, 211571793948 is an apocalyptic number.

It is an amenable number.

11571793948 is an abundant number, since it is smaller than the sum of its proper divisors (13253584868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11571793948 is a wasteful number, since it uses less digits than its factorization.

11571793948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879634 (or 879632 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 55.

The spelling of 11571793948 in words is "eleven billion, five hundred seventy-one million, seven hundred ninety-three thousand, nine hundred forty-eight".

Divisors: 1 2 4 11 13 22 23 26 44 46 52 92 143 253 286 299 506 572 598 1012 1196 3289 6578 13156 879583 1759166 3518332 9675413 11434579 19350826 20230409 22869158 38701652 40460818 45738316 80921636 125780369 222534499 251560738 262995317 445068998 503121476 525990634 890137996 1051981268 2892948487 5785896974 11571793948