5215607620765 has 4 divisors (see below), whose sum is σ = 6258729144924. Its totient is φ = 4172486096608.

The previous prime is 5215607620753. The next prime is 5215607620771. The reversal of 5215607620765 is 5670267065125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3966781255684 + 1248826365081 = 1991678^2 + 1117509^2 .

It is a cyclic number.

It is not a de Polignac number, because 5215607620765 - 2¹³ = 5215607612573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521560762072 + ... + 521560762081.

It is an arithmetic number, because the mean of its divisors is an integer number (1564682286231).

Almost surely, 2^{5215607620765} is an apocalyptic number.

It is an amenable number.

5215607620765 is a deficient number, since it is larger than the sum of its proper divisors (1043121524159).

5215607620765 is a wasteful number, since it uses less digits than its factorization.

5215607620765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043121524158.

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 5215607620765 in words is "five trillion, two hundred fifteen billion, six hundred seven million, six hundred twenty thousand, seven hundred sixty-five".