6640153362 has 56 divisors (see below), whose sum is σ = 14954286096. Its totient is φ = 2210306616.

The previous prime is 6640153361. The next prime is 6640153363. The reversal of 6640153362 is 2633510466.

6640153362 is a `hidden beast` number, since 6 + 64 + 0 + 1 + 533 + 62 = 666.

It is an interprime number because it is at equal distance from previous prime (6640153361) and next prime (6640153363).

It is not an unprimeable number, because it can be changed into a prime (6640153361) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1203013 + ... + 1208519.

Almost surely, 2^6640153362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6640153362, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7477143048).

6640153362 is an abundant number, since it is smaller than the sum of its proper divisors (8314132734).

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

6640153362 is an equidigital number, since it uses as much as digits as its factorization.

6640153362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354 (or 6339 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 6640153362 is about 81487.1361749816. The cubic root of 6640153362 is about 1879.5737454098.

The spelling of 6640153362 in words is "six billion, six hundred forty million, one hundred fifty-three thousand, three hundred sixty-two".