10111009972 has 48 divisors (see below), whose sum is σ = 21138718720. Its totient is φ = 4140396000.

The previous prime is 10111009939. The next prime is 10111009973. The reversal of 10111009972 is 27990011101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111009973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5154 + ... + 142297.

Almost surely, 2^10111009972 is an apocalyptic number.

It is an amenable number.

10111009972 is an abundant number, since it is smaller than the sum of its proper divisors (11027708748).

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

10111009972 is a wasteful number, since it uses less digits than its factorization.

10111009972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147572 (or 147570 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 31.

The spelling of 10111009972 in words is "ten billion, one hundred eleven million, nine thousand, nine hundred seventy-two".