1265367948951 has 16 divisors (see below), whose sum is σ = 1722276990720. Its totient is φ = 826127500800.

The previous prime is 1265367948947. The next prime is 1265367948959. The reversal of 1265367948951 is 1598497635621.

It is not a de Polignac number, because 1265367948951 - 2² = 1265367948947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265367948959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13544650 + ... + 13637751.

It is an arithmetic number, because the mean of its divisors is an integer number (107642311920).

Almost surely, 2^{1265367948951} is an apocalyptic number.

1265367948951 is a deficient number, since it is larger than the sum of its proper divisors (456909041769).

1265367948951 is a wasteful number, since it uses less digits than its factorization.

1265367948951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27182726.

The product of its digits is 97977600, while the sum is 66.

The spelling of 1265367948951 in words is "one trillion, two hundred sixty-five billion, three hundred sixty-seven million, nine hundred forty-eight thousand, nine hundred fifty-one".