21270554074 has 64 divisors (see below), whose sum is σ = 41966576640. Its totient is φ = 7833386880.

The previous prime is 21270554059. The next prime is 21270554083. The reversal of 21270554074 is 47045507212.

It is a super-2 number, since 2×21270554074² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1329229 + ... + 1345135.

It is an arithmetic number, because the mean of its divisors is an integer number (655727760).

Almost surely, 2^21270554074 is an apocalyptic number.

21270554074 is a deficient number, since it is larger than the sum of its proper divisors (20696022566).

21270554074 is a wasteful number, since it uses less digits than its factorization.

21270554074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16403.

The product of its (nonzero) digits is 78400, while the sum is 37.

The spelling of 21270554074 in words is "twenty-one billion, two hundred seventy million, five hundred fifty-four thousand, seventy-four".