1264138789015 has 8 divisors (see below), whose sum is σ = 1517141707488. Its totient is φ = 1011194257440.

The previous prime is 1264138789007. The next prime is 1264138789079. The reversal of 1264138789015 is 5109878314621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1264138789015 - 2³ = 1264138789007 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 7 ways as a sum of consecutive naturals, for example, 14549076 + ... + 14635705.

It is an arithmetic number, because the mean of its divisors is an integer number (189642713436).

It is a 1-persistent number, because it is pandigital, but 2⋅1264138789015 = 2528277578030 is not.

Almost surely, 2^{1264138789015} is an apocalyptic number.

1264138789015 is a deficient number, since it is larger than the sum of its proper divisors (253002918473).

1264138789015 is an equidigital number, since it uses as much as digits as its factorization.

1264138789015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29193449.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 1264138789015 in words is "one trillion, two hundred sixty-four billion, one hundred thirty-eight million, seven hundred eighty-nine thousand, fifteen".