55638477432542 has 8 divisors (see below), whose sum is σ = 83681463378216. Its totient is φ = 27744656306472.

The previous prime is 55638477432521. The next prime is 55638477432563. The reversal of 55638477432542 is 24523477483655.

It is an interprime number because it is at equal distance from previous prime (55638477432521) and next prime (55638477432563).

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

It is a super-2 number, since 2×55638477432542² (a number of 28 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, 37291203968 + ... + 37291205459.

It is an arithmetic number, because the mean of its divisors is an integer number (10460182922277).

Almost surely, 2^{55638477432542} is an apocalyptic number.

55638477432542 is a deficient number, since it is larger than the sum of its proper divisors (28042985945674).

55638477432542 is a wasteful number, since it uses less digits than its factorization.

55638477432542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74582409802.

The product of its digits is 677376000, while the sum is 65.

The spelling of 55638477432542 in words is "fifty-five trillion, six hundred thirty-eight billion, four hundred seventy-seven million, four hundred thirty-two thousand, five hundred forty-two".