5145611763721 has 16 divisors (see below), whose sum is σ = 6053602141440. Its totient is φ = 4311990241920.

The previous prime is 5145611763709. The next prime is 5145611763739. The reversal of 5145611763721 is 1273671165415.

It is a cyclic number.

It is not a de Polignac number, because 5145611763721 - 2⁵ = 5145611763689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5145611763701) 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, 24920340 + ... + 25125973.

It is an arithmetic number, because the mean of its divisors is an integer number (378350133840).

Almost surely, 2^{5145611763721} is an apocalyptic number.

It is an amenable number.

5145611763721 is a deficient number, since it is larger than the sum of its proper divisors (907990377719).

5145611763721 is a wasteful number, since it uses less digits than its factorization.

5145611763721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50047056.

The product of its digits is 1058400, while the sum is 49.

The spelling of 5145611763721 in words is "five trillion, one hundred forty-five billion, six hundred eleven million, seven hundred sixty-three thousand, seven hundred twenty-one".