2121624256650 has 48 divisors (see below), whose sum is σ = 5431358108928. Its totient is φ = 547515936000.

The previous prime is 2121624256639. The next prime is 2121624256673. The reversal of 2121624256650 is 566524261212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228126991 + ... + 228136290.

It is an arithmetic number, because the mean of its divisors is an integer number (113153293936).

Almost surely, 2^{2121624256650} is an apocalyptic number.

2121624256650 is an abundant number, since it is smaller than the sum of its proper divisors (3309733852278).

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

2121624256650 is a wasteful number, since it uses less digits than its factorization.

2121624256650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456263327 (or 456263322 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 2121624256650 in words is "two trillion, one hundred twenty-one billion, six hundred twenty-four million, two hundred fifty-six thousand, six hundred fifty".