1264016538915 has 32 divisors (see below), whose sum is σ = 2178083611200. Its totient is φ = 622260527616.

The previous prime is 1264016538881. The next prime is 1264016538943. The reversal of 1264016538915 is 5198356104621.

It is not a de Polignac number, because 1264016538915 - 2¹⁵ = 1264016506147 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5453529 + ... + 5680581.

It is an arithmetic number, because the mean of its divisors is an integer number (68065112850).

Almost surely, 2^{1264016538915} is an apocalyptic number.

1264016538915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1264016538915 is a deficient number, since it is larger than the sum of its proper divisors (914067072285).

1264016538915 is a wasteful number, since it uses less digits than its factorization.

1264016538915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255623.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 1264016538915 in words is "one trillion, two hundred sixty-four billion, sixteen million, five hundred thirty-eight thousand, nine hundred fifteen".