1157042605265 has 12 divisors (see below), whose sum is σ = 1399469994036. Its totient is φ = 918345562848.

The previous prime is 1157042605211. The next prime is 1157042605297. The reversal of 1157042605265 is 5625062407511.

It can be written as a sum of positive squares in 2 ways, for example, as 761682089536 + 395360515729 = 872744^2 + 628777^2 .

It is not a de Polignac number, because 1157042605265 - 2³² = 1152747637969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7093034 + ... + 7254323.

It is an arithmetic number, because the mean of its divisors is an integer number (116622499503).

Almost surely, 2^{1157042605265} is an apocalyptic number.

It is an amenable number.

1157042605265 is a deficient number, since it is larger than the sum of its proper divisors (242427388771).

1157042605265 is an equidigital number, since it uses as much as digits as its factorization.

1157042605265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14347616 (or 14347489 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 1157042605265 in words is "one trillion, one hundred fifty-seven billion, forty-two million, six hundred five thousand, two hundred sixty-five".