461612643006521 has 16 divisors (see below), whose sum is σ = 490802294304000. Its totient is φ = 433184011740480.

The previous prime is 461612643006497. The next prime is 461612643006551. The reversal of 461612643006521 is 125600346216164.

It is a cyclic number.

It is not a de Polignac number, because 461612643006521 - 2¹⁴ = 461612642990137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461612643006551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7175636 + ... + 31220426.

It is an arithmetic number, because the mean of its divisors is an integer number (30675143394000).

Almost surely, 2^{461612643006521} is an apocalyptic number.

It is an amenable number.

461612643006521 is a deficient number, since it is larger than the sum of its proper divisors (29189651297479).

461612643006521 is a wasteful number, since it uses less digits than its factorization.

461612643006521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24060616.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 461612643006521 in words is "four hundred sixty-one trillion, six hundred twelve billion, six hundred forty-three million, six thousand, five hundred twenty-one".