455001621644 has 24 divisors (see below), whose sum is σ = 796756562448. Its totient is φ = 227356948800.

The previous prime is 455001621631. The next prime is 455001621661. The reversal of 455001621644 is 446126100554.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 455001621598 and 455001621607.

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, 79807994 + ... + 79813694.

It is an arithmetic number, because the mean of its divisors is an integer number (33198190102).

Almost surely, 2^455001621644 is an apocalyptic number.

It is an amenable number.

455001621644 is a deficient number, since it is larger than the sum of its proper divisors (341754940804).

455001621644 is a wasteful number, since it uses less digits than its factorization.

455001621644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825 (or 14823 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 455001621644 in words is "four hundred fifty-five billion, one million, six hundred twenty-one thousand, six hundred forty-four".