1157505565231 has 16 divisors (see below), whose sum is σ = 1197532028160. Its totient is φ = 1117649111040.

The previous prime is 1157505565219. The next prime is 1157505565243. The reversal of 1157505565231 is 1325655057511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1157505565219) and next prime (1157505565243).

It is a cyclic number.

It is not a de Polignac number, because 1157505565231 - 2⁷ = 1157505565103 is a prime.

It is a super-2 number, since 2×1157505565231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157505565211) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 36992565 + ... + 37023841.

It is an arithmetic number, because the mean of its divisors is an integer number (74845751760).

Almost surely, 2^{1157505565231} is an apocalyptic number.

1157505565231 is a deficient number, since it is larger than the sum of its proper divisors (40026462929).

1157505565231 is a wasteful number, since it uses less digits than its factorization.

1157505565231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33954.

The product of its (nonzero) digits is 787500, while the sum is 46.

The spelling of 1157505565231 in words is "one trillion, one hundred fifty-seven billion, five hundred five million, five hundred sixty-five thousand, two hundred thirty-one".