102265642551 has 32 divisors (see below), whose sum is σ = 140206429440. Its totient is φ = 66267129600.

The previous prime is 102265642547. The next prime is 102265642597. The reversal of 102265642551 is 155246562201.

It is not a de Polignac number, because 102265642551 - 2² = 102265642547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102265640551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38458860 + ... + 38461518.

It is an arithmetic number, because the mean of its divisors is an integer number (4381450920).

Almost surely, 2^102265642551 is an apocalyptic number.

102265642551 is a deficient number, since it is larger than the sum of its proper divisors (37940786889).

102265642551 is a wasteful number, since it uses less digits than its factorization.

102265642551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4047.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 102265642551 in words is "one hundred two billion, two hundred sixty-five million, six hundred forty-two thousand, five hundred fifty-one".