2121640236392 has 32 divisors (see below), whose sum is σ = 4004613432000. Its totient is φ = 1053744000000.

The previous prime is 2121640236389. The next prime is 2121640236409. The reversal of 2121640236392 is 2936320461212.

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, 43766984 + ... + 43815432.

It is an arithmetic number, because the mean of its divisors is an integer number (125144169750).

Almost surely, 2^{2121640236392} is an apocalyptic number.

It is an amenable number.

2121640236392 is a deficient number, since it is larger than the sum of its proper divisors (1882973195608).

2121640236392 is a wasteful number, since it uses less digits than its factorization.

2121640236392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84857 (or 84853 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 2121640236392 in words is "two trillion, one hundred twenty-one billion, six hundred forty million, two hundred thirty-six thousand, three hundred ninety-two".