662040312156 has 72 divisors (see below), whose sum is σ = 1702541435504. Its totient is φ = 216871084800.

The previous prime is 662040312053. The next prime is 662040312191. The reversal of 662040312156 is 651213040266.

662040312156 is a `hidden beast` number, since 6 + 620 + 4 + 0 + 3 + 1 + 21 + 5 + 6 = 666.

662040312156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×662040312156² (a number of 24 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 662040312156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 273231 + ... + 1182681.

Almost surely, 2^662040312156 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 662040312156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851270717752).

662040312156 is an abundant number, since it is smaller than the sum of its proper divisors (1040501123348).

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

662040312156 is a wasteful number, since it uses less digits than its factorization.

662040312156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909811 (or 909806 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 662040312156 in words is "six hundred sixty-two billion, forty million, three hundred twelve thousand, one hundred fifty-six".