102506642526 has 32 divisors (see below), whose sum is σ = 210620316960. Its totient is φ = 33234955776.

The previous prime is 102506642509. The next prime is 102506642573. The reversal of 102506642526 is 625246605201.

It is a super-2 number, since 2×102506642526² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652170 + ... + 793938.

It is an arithmetic number, because the mean of its divisors is an integer number (6581884905).

Almost surely, 2^102506642526 is an apocalyptic number.

102506642526 is an abundant number, since it is smaller than the sum of its proper divisors (108113674434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102506642526 is a wasteful number, since it uses less digits than its factorization.

102506642526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145068.

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 102506642526 in words is "one hundred two billion, five hundred six million, six hundred forty-two thousand, five hundred twenty-six".