115187900642 has 4 divisors (see below), whose sum is σ = 172781850966. Its totient is φ = 57593950320.

The previous prime is 115187900627. The next prime is 115187900651. The reversal of 115187900642 is 246009781511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73767103201 + 41420797441 = 271601^2 + 203521^2 .

It is a super-2 number, since 2×115187900642² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115187900593 and 115187900602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28796975159 + ... + 28796975162.

Almost surely, 2^115187900642 is an apocalyptic number.

115187900642 is a deficient number, since it is larger than the sum of its proper divisors (57593950324).

115187900642 is an equidigital number, since it uses as much as digits as its factorization.

115187900642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57593950323.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 115187900642 in words is "one hundred fifteen billion, one hundred eighty-seven million, nine hundred thousand, six hundred forty-two".