3161640720736 has 24 divisors (see below), whose sum is σ = 6495109743024. Its totient is φ = 1512089040000.

The previous prime is 3161640720703. The next prime is 3161640720737. The reversal of 3161640720736 is 6370270461613.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161640720737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2147853015 + ... + 2147854486.

It is an arithmetic number, because the mean of its divisors is an integer number (270629572626).

Almost surely, 2^{3161640720736} is an apocalyptic number.

It is an amenable number.

3161640720736 is an abundant number, since it is smaller than the sum of its proper divisors (3333469022288).

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

3161640720736 is a wasteful number, since it uses less digits than its factorization.

3161640720736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295707534 (or 4295707526 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 3161640720736 in words is "three trillion, one hundred sixty-one billion, six hundred forty million, seven hundred twenty thousand, seven hundred thirty-six".