85716521946 has 80 divisors (see below), whose sum is σ = 218639348928. Its totient is φ = 24845356800.

The previous prime is 85716521927. The next prime is 85716521953. The reversal of 85716521946 is 64912561758.

It is a happy number.

85716521946 is a `hidden beast` number, since 8 + 5 + 71 + 6 + 521 + 9 + 46 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 85716521892 and 85716521901.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1004695 + ... + 1086666.

Almost surely, 2^85716521946 is an apocalyptic number.

85716521946 is an abundant number, since it is smaller than the sum of its proper divisors (132922826982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85716521946 is a wasteful number, since it uses less digits than its factorization.

85716521946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091409 (or 2091400 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 85716521946 in words is "eighty-five billion, seven hundred sixteen million, five hundred twenty-one thousand, nine hundred forty-six".