1151565565701 has 4 divisors (see below), whose sum is σ = 1535420754272. Its totient is φ = 767710377132.

The previous prime is 1151565565687. The next prime is 1151565565747. The reversal of 1151565565701 is 1075655651511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1151565565701 - 2²⁷ = 1151431347973 is a prime.

It is a super-2 number, since 2×1151565565701² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151565565201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191927594281 + ... + 191927594286.

It is an arithmetic number, because the mean of its divisors is an integer number (383855188568).

Almost surely, 2^{1151565565701} is an apocalyptic number.

It is an amenable number.

1151565565701 is a deficient number, since it is larger than the sum of its proper divisors (383855188571).

1151565565701 is an equidigital number, since it uses as much as digits as its factorization.

1151565565701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383855188570.

The product of its (nonzero) digits is 787500, while the sum is 48.

The spelling of 1151565565701 in words is "one trillion, one hundred fifty-one billion, five hundred sixty-five million, five hundred sixty-five thousand, seven hundred one".