85630543812 has 36 divisors (see below), whose sum is σ = 236132712816. Its totient is φ = 25948649520.

The previous prime is 85630543807. The next prime is 85630543847. The reversal of 85630543812 is 21834503658.

85630543812 is a `hidden beast` number, since 8 + 5 + 630 + 5 + 4 + 3 + 8 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108118978 + ... + 108119769.

Almost surely, 2^85630543812 is an apocalyptic number.

It is an amenable number.

85630543812 is an abundant number, since it is smaller than the sum of its proper divisors (150502169004).

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

85630543812 is a wasteful number, since it uses less digits than its factorization.

85630543812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216238768 (or 216238763 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 85630543812 in words is "eighty-five billion, six hundred thirty million, five hundred forty-three thousand, eight hundred twelve".