2913721765870 has 32 divisors (see below), whose sum is σ = 5256500689440. Its totient is φ = 1162866560640.

The previous prime is 2913721765861. The next prime is 2913721765873. The reversal of 2913721765870 is 785671273192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2913721765873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97066984 + ... + 97096996.

It is an arithmetic number, because the mean of its divisors is an integer number (164265646545).

Almost surely, 2^{2913721765870} is an apocalyptic number.

2913721765870 is a deficient number, since it is larger than the sum of its proper divisors (2342778923570).

2913721765870 is a wasteful number, since it uses less digits than its factorization.

2913721765870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51540.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 2913721765870 in words is "two trillion, nine hundred thirteen billion, seven hundred twenty-one million, seven hundred sixty-five thousand, eight hundred seventy".