72011022776 has 64 divisors (see below), whose sum is σ = 168645991680. Its totient is φ = 28004820480.

The previous prime is 72011022763. The next prime is 72011022781. The reversal of 72011022776 is 67722011027.

It is a congruent 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, 230096 + ... + 443808.

It is an arithmetic number, because the mean of its divisors is an integer number (2635093620).

Almost surely, 2^72011022776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72011022776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84322995840).

72011022776 is an abundant number, since it is smaller than the sum of its proper divisors (96634968904).

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

72011022776 is a wasteful number, since it uses less digits than its factorization.

72011022776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214284 (or 214280 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 72011022776 in words is "seventy-two billion, eleven million, twenty-two thousand, seven hundred seventy-six".