1251530102515 has 64 divisors (see below), whose sum is σ = 1982861088768. Its totient is φ = 734170982400.

The previous prime is 1251530102479. The next prime is 1251530102531. The reversal of 1251530102515 is 5152010351521.

It is not a de Polignac number, because 1251530102515 - 2¹³ = 1251530094323 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67057285 + ... + 67075945.

It is an arithmetic number, because the mean of its divisors is an integer number (30982204512).

Almost surely, 2^{1251530102515} is an apocalyptic number.

1251530102515 is a deficient number, since it is larger than the sum of its proper divisors (731330986253).

1251530102515 is a wasteful number, since it uses less digits than its factorization.

1251530102515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28948.

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

The spelling of 1251530102515 in words is "one trillion, two hundred fifty-one billion, five hundred thirty million, one hundred two thousand, five hundred fifteen".