55638505474 has 16 divisors (see below), whose sum is σ = 83837558520. Its totient is φ = 27692697600.

The previous prime is 55638505463. The next prime is 55638505499. The reversal of 55638505474 is 47450583655.

It can be written as a sum of positive squares in 4 ways, for example, as 49147786249 + 6490719225 = 221693^2 + 80565^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4390932 + ... + 4403584.

Almost surely, 2^55638505474 is an apocalyptic number.

55638505474 is a deficient number, since it is larger than the sum of its proper divisors (28199053046).

55638505474 is a wasteful number, since it uses less digits than its factorization.

55638505474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22485.

The product of its (nonzero) digits is 10080000, while the sum is 52.

The spelling of 55638505474 in words is "fifty-five billion, six hundred thirty-eight million, five hundred five thousand, four hundred seventy-four".