1621054942704 has 50 divisors (see below), whose sum is σ = 4691803314000. Its totient is φ = 540351647136.

The previous prime is 1621054942691. The next prime is 1621054942807. The reversal of 1621054942704 is 4072494501261.

1621054942704 is a `hidden beast` number, since 1 + 6 + 210 + 5 + 4 + 9 + 427 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1621054942704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 625405704 + ... + 625408295.

It is an arithmetic number, because the mean of its divisors is an integer number (93836066280).

Almost surely, 2^{1621054942704} is an apocalyptic number.

It is an amenable number.

1621054942704 is an abundant number, since it is smaller than the sum of its proper divisors (3070748371296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1621054942704 is a wasteful number, since it uses less digits than its factorization.

1621054942704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250814019 (or 1250814004 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 1621054942704 in words is "one trillion, six hundred twenty-one billion, fifty-four million, nine hundred forty-two thousand, seven hundred four".