6135688660 has 24 divisors (see below), whose sum is σ = 13096177416. Its totient is φ = 2414040960.

The previous prime is 6135688631. The next prime is 6135688661. The reversal of 6135688660 is 668865316.

It can be written as a sum of positive squares in 4 ways, for example, as 329858244 + 5805830416 = 18162^2 + 76196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6135688661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2513407 + ... + 2515846.

It is an arithmetic number, because the mean of its divisors is an integer number (545674059).

Almost surely, 2^6135688660 is an apocalyptic number.

It is an amenable number.

6135688660 is an abundant number, since it is smaller than the sum of its proper divisors (6960488756).

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

6135688660 is a wasteful number, since it uses less digits than its factorization.

6135688660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029323 (or 5029321 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 6135688660 is about 78330.6367904666. The cubic root of 6135688660 is about 1830.7165378603.

The spelling of 6135688660 in words is "six billion, one hundred thirty-five million, six hundred eighty-eight thousand, six hundred sixty".