21375725576624 has 10 divisors (see below), whose sum is σ = 41415468304740. Its totient is φ = 10687862788304.

The previous prime is 21375725576581. The next prime is 21375725576651. The reversal of 21375725576624 is 42667552757312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 667991424254 + ... + 667991424285.

It is an arithmetic number, because the mean of its divisors is an integer number (4141546830474).

Almost surely, 2^{21375725576624} is an apocalyptic number.

It is an amenable number.

21375725576624 is a deficient number, since it is larger than the sum of its proper divisors (20039742728116).

21375725576624 is a wasteful number, since it uses less digits than its factorization.

21375725576624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335982848547 (or 1335982848541 counting only the distinct ones).

The product of its digits is 148176000, while the sum is 62.

The spelling of 21375725576624 in words is "twenty-one trillion, three hundred seventy-five billion, seven hundred twenty-five million, five hundred seventy-six thousand, six hundred twenty-four".