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50013011897 = 137547766653
BaseRepresentation
bin101110100101000000…
…011111111110111001
311210002111022020120222
4232211000133332321
51304411312340042
634550424225425
73420240405212
oct564500377671
9153074266528
1050013011897
111a235050092
12983930b275
134940677484
1425c635a409
15147aab52d2
hexba501ffb9

50013011897 has 8 divisors (see below), whose sum is σ = 50388024456. Its totient is φ = 49638143872.

The previous prime is 50013011887. The next prime is 50013011957. The reversal of 50013011897 is 79811031005.

It can be written as a sum of positive squares in 4 ways, for example, as 9374886976 + 40638124921 = 96824^2 + 201589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50013011897 - 26 = 50013011833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50013011827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717023 + ... + 783675.

It is an arithmetic number, because the mean of its divisors is an integer number (6298503057).

Almost surely, 250013011897 is an apocalyptic number.

It is an amenable number.

50013011897 is a deficient number, since it is larger than the sum of its proper divisors (375012559).

50013011897 is a wasteful number, since it uses less digits than its factorization.

50013011897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72267.

The product of its (nonzero) digits is 7560, while the sum is 35.

The spelling of 50013011897 in words is "fifty billion, thirteen million, eleven thousand, eight hundred ninety-seven".

Divisors: 1 137 5477 66653 750349 9131461 365058481 50013011897