2011315261572 has 60 divisors (see below), whose sum is σ = 5258395735516. Its totient is φ = 670384823040.

The previous prime is 2011315261541. The next prime is 2011315261619. The reversal of 2011315261572 is 2751625131102.

2011315261572 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 31 + 5 + 2 + 615 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 523388583936 + 1487926677636 = 723456^2 + 1219806^2 .

It is a super-2 number, since 2×2011315261572² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3918768 + ... + 4402200.

Almost surely, 2^{2011315261572} is an apocalyptic number.

It is an amenable number.

2011315261572 is an abundant number, since it is smaller than the sum of its proper divisors (3247080473944).

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

2011315261572 is a wasteful number, since it uses less digits than its factorization.

2011315261572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496290 (or 496279 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 2011315261572 in words is "two trillion, eleven billion, three hundred fifteen million, two hundred sixty-one thousand, five hundred seventy-two".