621405464504126 has 32 divisors (see below), whose sum is σ = 945383449127040. Its totient is φ = 306304389216000.

The previous prime is 621405464504089. The next prime is 621405464504191.

621405464504126 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×621405464504126² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425130650 + ... + 426589826.

It is an arithmetic number, because the mean of its divisors is an integer number (29543232785220).

Almost surely, 2^{621405464504126} is an apocalyptic number.

621405464504126 is a deficient number, since it is larger than the sum of its proper divisors (323977984622914).

621405464504126 is a wasteful number, since it uses less digits than its factorization.

621405464504126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468340.

The product of its (nonzero) digits is 5529600, while the sum is 50.

The spelling of 621405464504126 in words is "six hundred twenty-one trillion, four hundred five billion, four hundred sixty-four million, five hundred four thousand, one hundred twenty-six".