102691037427 has 16 divisors (see below), whose sum is σ = 149421127680. Its totient is φ = 62215181600.

The previous prime is 102691037387. The next prime is 102691037429. The reversal of 102691037427 is 724730196201.

It is not a de Polignac number, because 102691037427 - 2¹¹ = 102691035379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102691037429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449427 + ... + 638252.

It is an arithmetic number, because the mean of its divisors is an integer number (9338820480).

Almost surely, 2^102691037427 is an apocalyptic number.

102691037427 is a deficient number, since it is larger than the sum of its proper divisors (46730090253).

102691037427 is a wasteful number, since it uses less digits than its factorization.

102691037427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090554.

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 102691037427 in words is "one hundred two billion, six hundred ninety-one million, thirty-seven thousand, four hundred twenty-seven".