1265415141451 has 4 divisors (see below), whose sum is σ = 1265424778072. Its totient is φ = 1265405504832.

The previous prime is 1265415141437. The next prime is 1265415141479. The reversal of 1265415141451 is 1541415145621.

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 1265415141451 - 2²¹ = 1265413044299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265415142451) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4618581 + ... + 4884886.

It is an arithmetic number, because the mean of its divisors is an integer number (316356194518).

Almost surely, 2^{1265415141451} is an apocalyptic number.

1265415141451 is a deficient number, since it is larger than the sum of its proper divisors (9636621).

1265415141451 is an equidigital number, since it uses as much as digits as its factorization.

1265415141451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9636620.

The product of its digits is 96000, while the sum is 40.

The spelling of 1265415141451 in words is "one trillion, two hundred sixty-five billion, four hundred fifteen million, one hundred forty-one thousand, four hundred fifty-one".