623121352972 has 6 divisors (see below), whose sum is σ = 1090462367708. Its totient is φ = 311560676484.

The previous prime is 623121352949. The next prime is 623121352979. The reversal of 623121352972 is 279253121326.

It is not an unprimeable number, because it can be changed into a prime (623121352979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77890169118 + ... + 77890169125.

Almost surely, 2^623121352972 is an apocalyptic number.

It is an amenable number.

623121352972 is a deficient number, since it is larger than the sum of its proper divisors (467341014736).

623121352972 is a wasteful number, since it uses less digits than its factorization.

623121352972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155780338247 (or 155780338245 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The spelling of 623121352972 in words is "six hundred twenty-three billion, one hundred twenty-one million, three hundred fifty-two thousand, nine hundred seventy-two".