620040320015 has 4 divisors (see below), whose sum is σ = 744048384024. Its totient is φ = 496032256008.

The previous prime is 620040319991. The next prime is 620040320021. The reversal of 620040320015 is 510023040026.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620040320015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62004031997 + ... + 62004032006.

It is an arithmetic number, because the mean of its divisors is an integer number (186012096006).

Almost surely, 2^620040320015 is an apocalyptic number.

620040320015 is a deficient number, since it is larger than the sum of its proper divisors (124008064009).

620040320015 is a wasteful number, since it uses less digits than its factorization.

620040320015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124008064008.

The product of its (nonzero) digits is 1440, while the sum is 23.

The spelling of 620040320015 in words is "six hundred twenty billion, forty million, three hundred twenty thousand, fifteen".