1157911147391 has 4 divisors (see below), whose sum is σ = 1157914011672. Its totient is φ = 1157908283112.

The previous prime is 1157911147387. The next prime is 1157911147399. The reversal of 1157911147391 is 1937411197511.

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 1157911147391 - 2² = 1157911147387 is a prime.

It is a super-2 number, since 2×1157911147391² (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 (1157911147399) 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, 701501 + ... + 1675686.

It is an arithmetic number, because the mean of its divisors is an integer number (289478502918).

Almost surely, 2^{1157911147391} is an apocalyptic number.

1157911147391 is a deficient number, since it is larger than the sum of its proper divisors (2864281).

1157911147391 is an equidigital number, since it uses as much as digits as its factorization.

1157911147391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864280.

The product of its digits is 238140, while the sum is 50.

The spelling of 1157911147391 in words is "one trillion, one hundred fifty-seven billion, nine hundred eleven million, one hundred forty-seven thousand, three hundred ninety-one".