65440760137436 has 24 divisors (see below), whose sum is σ = 114821903099904. Its totient is φ = 32634504434160.

The previous prime is 65440760137409. The next prime is 65440760137447. The reversal of 65440760137436 is 63473106704456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132073091 + ... + 132567653.

It is an arithmetic number, because the mean of its divisors is an integer number (4784245962496).

Almost surely, 2^{65440760137436} is an apocalyptic number.

It is an amenable number.

65440760137436 is a deficient number, since it is larger than the sum of its proper divisors (49381142962468).

65440760137436 is a wasteful number, since it uses less digits than its factorization.

65440760137436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581321 (or 581319 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 56.

The spelling of 65440760137436 in words is "sixty-five trillion, four hundred forty billion, seven hundred sixty million, one hundred thirty-seven thousand, four hundred thirty-six".