1137137556991 has 2 divisors, whose sum is σ = 1137137556992. Its totient is φ = 1137137556990.

The previous prime is 1137137556983. The next prime is 1137137557051. The reversal of 1137137556991 is 1996557317311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1137137556991 - 2³ = 1137137556983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1137137556941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568568778495 + 568568778496.

It is an arithmetic number, because the mean of its divisors is an integer number (568568778496).

Almost surely, 2^{1137137556991} is an apocalyptic number.

1137137556991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137137556991 is an equidigital number, since it uses as much as digits as its factorization.

1137137556991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5358150, while the sum is 58.

The spelling of 1137137556991 in words is "one trillion, one hundred thirty-seven billion, one hundred thirty-seven million, five hundred fifty-six thousand, nine hundred ninety-one".