85477786945 has 16 divisors (see below), whose sum is σ = 103292678592. Its totient is φ = 67904141760.

The previous prime is 85477786931. The next prime is 85477786951. The reversal of 85477786945 is 54968777458.

It is not a de Polignac number, because 85477786945 - 2⁵ = 85477786913 is a prime.

It is a super-2 number, since 2×85477786945² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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, 375919 + ... + 558811.

It is an arithmetic number, because the mean of its divisors is an integer number (6455792412).

Almost surely, 2^85477786945 is an apocalyptic number.

It is an amenable number.

85477786945 is a deficient number, since it is larger than the sum of its proper divisors (17814891647).

85477786945 is a wasteful number, since it uses less digits than its factorization.

85477786945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183552.

The product of its digits is 474163200, while the sum is 70.

The spelling of 85477786945 in words is "eighty-five billion, four hundred seventy-seven million, seven hundred eighty-six thousand, nine hundred forty-five".