621233164252401 has 16 divisors (see below), whose sum is σ = 830305292572800. Its totient is φ = 413158483916928.

The previous prime is 621233164252399. The next prime is 621233164252417. The reversal of 621233164252401 is 104252461332126.

It is not a de Polignac number, because 621233164252401 - 2¹ = 621233164252399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621233164252471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20399316 + ... + 40725893.

It is an arithmetic number, because the mean of its divisors is an integer number (51894080785800).

Almost surely, 2^{621233164252401} is an apocalyptic number.

It is an amenable number.

621233164252401 is a deficient number, since it is larger than the sum of its proper divisors (209072128320399).

621233164252401 is a wasteful number, since it uses less digits than its factorization.

621233164252401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61133368.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 621233164252401 in words is "six hundred twenty-one trillion, two hundred thirty-three billion, one hundred sixty-four million, two hundred fifty-two thousand, four hundred one".