91836763212 has 24 divisors (see below), whose sum is σ = 214899790000. Its totient is φ = 30524538816.

The previous prime is 91836763189. The next prime is 91836763219. The reversal of 91836763212 is 21236763819.

It is not an unprimeable number, because it can be changed into a prime (91836763219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10960087 + ... + 10968462.

Almost surely, 2^91836763212 is an apocalyptic number.

It is an amenable number.

91836763212 is an abundant number, since it is smaller than the sum of its proper divisors (123063026788).

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

91836763212 is a wasteful number, since it uses less digits than its factorization.

91836763212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21928905 (or 21928903 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The spelling of 91836763212 in words is "ninety-one billion, eight hundred thirty-six million, seven hundred sixty-three thousand, two hundred twelve".