6620525612313 has 4 divisors (see below), whose sum is σ = 8827367483088. Its totient is φ = 4413683741540.

The previous prime is 6620525612293. The next prime is 6620525612339. The reversal of 6620525612313 is 3132165250266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6620525612313 - 2⁹ = 6620525611801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6620525612353) 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, 1103420935383 + ... + 1103420935388.

It is an arithmetic number, because the mean of its divisors is an integer number (2206841870772).

Almost surely, 2^{6620525612313} is an apocalyptic number.

It is an amenable number.

6620525612313 is a deficient number, since it is larger than the sum of its proper divisors (2206841870775).

6620525612313 is a wasteful number, since it uses less digits than its factorization.

6620525612313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206841870774.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 6620525612313 in words is "six trillion, six hundred twenty billion, five hundred twenty-five million, six hundred twelve thousand, three hundred thirteen".