102121659271544 has 32 divisors (see below), whose sum is σ = 208885740192000. Its totient is φ = 46418818689120.

The previous prime is 102121659271519. The next prime is 102121659271547. The reversal of 102121659271544 is 445172956121201.

It is a junction number, because it is equal to n+sod(n) for n = 102121659271492 and 102121659271501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121659271547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40243169 + ... + 42705455.

It is an arithmetic number, because the mean of its divisors is an integer number (6527679381000).

Almost surely, 2^{102121659271544} is an apocalyptic number.

It is an amenable number.

102121659271544 is an abundant number, since it is smaller than the sum of its proper divisors (106764080920456).

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

102121659271544 is a wasteful number, since it uses less digits than its factorization.

102121659271544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933603 (or 2933599 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 102121659271544 in words is "one hundred two trillion, one hundred twenty-one billion, six hundred fifty-nine million, two hundred seventy-one thousand, five hundred forty-four".