121925152644 has 48 divisors (see below), whose sum is σ = 287236325376. Its totient is φ = 40250800800.

The previous prime is 121925152633. The next prime is 121925152691. The reversal of 121925152644 is 446251529121.

It is a junction number, because it is equal to n+sod(n) for n = 121925152596 and 121925152605.

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, 800149 + ... + 940259.

It is an arithmetic number, because the mean of its divisors is an integer number (5984090112).

Almost surely, 2^121925152644 is an apocalyptic number.

It is an amenable number.

121925152644 is an abundant number, since it is smaller than the sum of its proper divisors (165311172732).

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

121925152644 is a wasteful number, since it uses less digits than its factorization.

121925152644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140816 (or 140814 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The spelling of 121925152644 in words is "one hundred twenty-one billion, nine hundred twenty-five million, one hundred fifty-two thousand, six hundred forty-four".