621465010606161 has 32 divisors (see below), whose sum is σ = 932434512145920. Its totient is φ = 409031479787472.

The previous prime is 621465010606129. The next prime is 621465010606169. The reversal of 621465010606161 is 161606010564126.

621465010606161 is a `hidden beast` number, since 6 + 2 + 1 + 465 + 0 + 10 + 60 + 61 + 61 = 666.

It is not a de Polignac number, because 621465010606161 - 2⁵ = 621465010606129 is a prime.

It is a super-3 number, since 3×621465010606161³ (a number of 45 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (621465010606169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93969555 + ... + 100365368.

It is an arithmetic number, because the mean of its divisors is an integer number (29138578504560).

Almost surely, 2^{621465010606161} is an apocalyptic number.

It is an amenable number.

621465010606161 is a deficient number, since it is larger than the sum of its proper divisors (310969501539759).

621465010606161 is a wasteful number, since it uses less digits than its factorization.

621465010606161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194336442 (or 194336436 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 621465010606161 in words is "six hundred twenty-one trillion, four hundred sixty-five billion, ten million, six hundred six thousand, one hundred sixty-one".