85011898624 has 27 divisors (see below), whose sum is σ = 169701031983. Its totient is φ = 42503616768.

The previous prime is 85011898619. The next prime is 85011898639. The reversal of 85011898624 is 42689811058.

It is a happy number.

The square root of 85011898624 is 291568.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4655977 + ... + 4674199.

Almost surely, 2^85011898624 is an apocalyptic number.

85011898624 is the 291568-th square number.

It is an amenable number.

85011898624 is a deficient number, since it is larger than the sum of its proper divisors (84689133359).

85011898624 is an frugal number, since it uses more digits than its factorization.

85011898624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36462 (or 18225 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 85011898624 in words is "eighty-five billion, eleven million, eight hundred ninety-eight thousand, six hundred twenty-four".