1513255021051 has 4 divisors (see below), whose sum is σ = 1513431010000. Its totient is φ = 1513079032104.

The previous prime is 1513255021049. The next prime is 1513255021073. The reversal of 1513255021051 is 1501205523151.

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 1513255021051 - 2¹ = 1513255021049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1513255021001) 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, 87981576 + ... + 87998773.

It is an arithmetic number, because the mean of its divisors is an integer number (378357752500).

Almost surely, 2^{1513255021051} is an apocalyptic number.

1513255021051 is a deficient number, since it is larger than the sum of its proper divisors (175988949).

1513255021051 is an equidigital number, since it uses as much as digits as its factorization.

1513255021051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175988948.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 1513255021051 in words is "one trillion, five hundred thirteen billion, two hundred fifty-five million, twenty-one thousand, fifty-one".