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153991309144 = 23293311211241
BaseRepresentation
bin1000111101101010011…
…0001110011101011000
3112201110220211000201011
42033122212032131120
510010333233343034
6154424224103304
714061022350031
oct2173246163530
9481426730634
10153991309144
115a342096852
1225a17464b34
13116a144a14a
14764b8c1a88
1540141d9864
hex23da98e758

153991309144 has 32 divisors (see below), whose sum is σ = 290652092640. Its totient is φ = 76485779200.

The previous prime is 153991309133. The next prime is 153991309159. The reversal of 153991309144 is 441903199351.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623364 + ... + 834604.

It is an arithmetic number, because the mean of its divisors is an integer number (9082877895).

Almost surely, 2153991309144 is an apocalyptic number.

It is an amenable number.

153991309144 is a deficient number, since it is larger than the sum of its proper divisors (136660783496).

153991309144 is a wasteful number, since it uses less digits than its factorization.

153991309144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211851 (or 211847 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 153991309144 in words is "one hundred fifty-three billion, nine hundred ninety-one million, three hundred nine thousand, one hundred forty-four".

Divisors: 1 2 4 8 293 311 586 622 1172 1244 2344 2488 91123 182246 211241 364492 422482 728984 844964 1689928 61893613 65695951 123787226 131391902 247574452 262783804 495148904 525567608 19248913643 38497827286 76995654572 153991309144