42505138055055 has 16 divisors (see below), whose sum is σ = 73239622495200. Its totient is φ = 20925606427008.

The previous prime is 42505138054997. The next prime is 42505138055063. The reversal of 42505138055055 is 55055083150524.

It is not a de Polignac number, because 42505138055055 - 2²⁵ = 42505104500623 is a prime.

It is a super-2 number, since 2×42505138055055² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42505138054995 and 42505138055013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108987533280 + ... + 108987533669.

It is an arithmetic number, because the mean of its divisors is an integer number (4577476405950).

Almost surely, 2^{42505138055055} is an apocalyptic number.

42505138055055 is a deficient number, since it is larger than the sum of its proper divisors (30734484440145).

42505138055055 is a wasteful number, since it uses less digits than its factorization.

42505138055055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217975066970.

The product of its (nonzero) digits is 3000000, while the sum is 48.

The spelling of 42505138055055 in words is "forty-two trillion, five hundred five billion, one hundred thirty-eight million, fifty-five thousand, fifty-five".