102607591491 has 6 divisors (see below), whose sum is σ = 148210965500. Its totient is φ = 68405060988.

The previous prime is 102607591459. The next prime is 102607591531. The reversal of 102607591491 is 194195706201.

102607591491 is a `hidden beast` number, since 1 + 0 + 2 + 6 + 0 + 75 + 91 + 491 = 666.

It is not a de Polignac number, because 102607591491 - 2⁵ = 102607591459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102607591591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5700421741 + ... + 5700421758.

Almost surely, 2^102607591491 is an apocalyptic number.

102607591491 is a deficient number, since it is larger than the sum of its proper divisors (45603374009).

102607591491 is a wasteful number, since it uses less digits than its factorization.

102607591491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11400843505 (or 11400843502 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The spelling of 102607591491 in words is "one hundred two billion, six hundred seven million, five hundred ninety-one thousand, four hundred ninety-one".