2015620256530 has 32 divisors (see below), whose sum is σ = 3644344711296. Its totient is φ = 802642305024.

The previous prime is 2015620256519. The next prime is 2015620256549. The reversal of 2015620256530 is 356520265102.

It is a self number, because there is not a number n which added to its sum of digits gives 2015620256530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62470162 + ... + 62502418.

It is an arithmetic number, because the mean of its divisors is an integer number (113885772228).

Almost surely, 2^{2015620256530} is an apocalyptic number.

2015620256530 is a deficient number, since it is larger than the sum of its proper divisors (1628724454766).

2015620256530 is a wasteful number, since it uses less digits than its factorization.

2015620256530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60018.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 2015620256530 in words is "two trillion, fifteen billion, six hundred twenty million, two hundred fifty-six thousand, five hundred thirty".