612513313787 has 4 divisors (see below), whose sum is σ = 612536882616. Its totient is φ = 612489744960.

The previous prime is 612513313777. The next prime is 612513313799. The reversal of 612513313787 is 787313315216.

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

It is a cyclic number.

It is not a de Polignac number, because 612513313787 - 2⁴ = 612513313771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612513313777) 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, 11745389 + ... + 11797422.

It is an arithmetic number, because the mean of its divisors is an integer number (153134220654).

Almost surely, 2^612513313787 is an apocalyptic number.

612513313787 is a deficient number, since it is larger than the sum of its proper divisors (23568829).

612513313787 is a wasteful number, since it uses less digits than its factorization.

612513313787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568828.

The product of its digits is 635040, while the sum is 47.

The spelling of 612513313787 in words is "six hundred twelve billion, five hundred thirteen million, three hundred thirteen thousand, seven hundred eighty-seven".