102123640344560 has 40 divisors (see below), whose sum is σ = 239885272724496. Its totient is φ = 40428327720960.

The previous prime is 102123640344547. The next prime is 102123640344571. The reversal of 102123640344560 is 65443046321201.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6580123706 + ... + 6580139225.

Almost surely, 2^{102123640344560} is an apocalyptic number.

102123640344560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102123640344560 is an abundant number, since it is smaller than the sum of its proper divisors (137761632379936).

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

102123640344560 is a wasteful number, since it uses less digits than its factorization.

102123640344560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13160263041 (or 13160263035 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

Adding to 102123640344560 its reverse (65443046321201), we get a palindrome (167566686665761).

The spelling of 102123640344560 in words is "one hundred two trillion, one hundred twenty-three billion, six hundred forty million, three hundred forty-four thousand, five hundred sixty".