111898632051 has 12 divisors (see below), whose sum is σ = 167204852880. Its totient is φ = 72026705520.

The previous prime is 111898632031. The next prime is 111898632059. The reversal of 111898632051 is 150236898111.

111898632051 is a `hidden beast` number, since 1 + 1 + 1 + 8 + 9 + 8 + 632 + 0 + 5 + 1 = 666.

It is not a de Polignac number, because 111898632051 - 2²¹ = 111896534899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111898631988 and 111898632006.

It is not an unprimeable number, because it can be changed into a prime (111898632059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 214364935 + ... + 214365456.

It is an arithmetic number, because the mean of its divisors is an integer number (13933737740).

Almost surely, 2^111898632051 is an apocalyptic number.

111898632051 is a deficient number, since it is larger than the sum of its proper divisors (55306220829).

111898632051 is a wasteful number, since it uses less digits than its factorization.

111898632051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428730426 (or 428730423 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The spelling of 111898632051 in words is "one hundred eleven billion, eight hundred ninety-eight million, six hundred thirty-two thousand, fifty-one".