55771860542 has 16 divisors (see below), whose sum is σ = 83986534800. Its totient is φ = 27776519232.

The previous prime is 55771860481. The next prime is 55771860553. The reversal of 55771860542 is 24506817755.

It is a super-2 number, since 2×55771860542² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623273 + ... + 707115.

It is an arithmetic number, because the mean of its divisors is an integer number (5249158425).

Almost surely, 2^55771860542 is an apocalyptic number.

55771860542 is a deficient number, since it is larger than the sum of its proper divisors (28214674258).

55771860542 is a wasteful number, since it uses less digits than its factorization.

55771860542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85147.

The product of its (nonzero) digits is 2352000, while the sum is 50.

The spelling of 55771860542 in words is "fifty-five billion, seven hundred seventy-one million, eight hundred sixty thousand, five hundred forty-two".