85511421415 has 16 divisors (see below), whose sum is σ = 119767974912. Its totient is φ = 57388819104.

The previous prime is 85511421409. The next prime is 85511421427. The reversal of 85511421415 is 51412411558.

It is a cyclic number.

It is not a de Polignac number, because 85511421415 - 2¹⁵ = 85511388647 is a prime.

It is a Duffinian number.

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, 25989669 + ... + 25992958.

It is an arithmetic number, because the mean of its divisors is an integer number (7485498432).

Almost surely, 2^85511421415 is an apocalyptic number.

85511421415 is a deficient number, since it is larger than the sum of its proper divisors (34256553497).

85511421415 is a wasteful number, since it uses less digits than its factorization.

85511421415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51982686.

The product of its digits is 32000, while the sum is 37.

The spelling of 85511421415 in words is "eighty-five billion, five hundred eleven million, four hundred twenty-one thousand, four hundred fifteen".