621603684353054 has 8 divisors (see below), whose sum is σ = 1004129028570360. Its totient is φ = 286894008162936.

The previous prime is 621603684352991. The next prime is 621603684353123. The reversal of 621603684353054 is 450353486306126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×621603684353054² (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 3 ways as a sum of consecutive naturals, for example, 11953917006764 + ... + 11953917006815.

It is an arithmetic number, because the mean of its divisors is an integer number (125516128571295).

Almost surely, 2^{621603684353054} is an apocalyptic number.

621603684353054 is a deficient number, since it is larger than the sum of its proper divisors (382525344217306).

621603684353054 is a wasteful number, since it uses less digits than its factorization.

621603684353054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23907834013594.

The product of its (nonzero) digits is 37324800, while the sum is 56.

The spelling of 621603684353054 in words is "six hundred twenty-one trillion, six hundred three billion, six hundred eighty-four million, three hundred fifty-three thousand, fifty-four".