55432511712015 has 16 divisors (see below), whose sum is σ = 88770996521088. Its totient is φ = 29537680319136.

The previous prime is 55432511712013. The next prime is 55432511712089. The reversal of 55432511712015 is 51021711523455.

It is not a de Polignac number, because 55432511712015 - 2¹ = 55432511712013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55432511712013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1645353049 + ... + 1645386738.

It is an arithmetic number, because the mean of its divisors is an integer number (5548187282568).

Almost surely, 2^{55432511712015} is an apocalyptic number.

55432511712015 is a deficient number, since it is larger than the sum of its proper divisors (33338484809073).

55432511712015 is a wasteful number, since it uses less digits than its factorization.

55432511712015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290740918.

The product of its (nonzero) digits is 210000, while the sum is 42.

The spelling of 55432511712015 in words is "fifty-five trillion, four hundred thirty-two billion, five hundred eleven million, seven hundred twelve thousand, fifteen".