115970781551 has 2 divisors, whose sum is σ = 115970781552. Its totient is φ = 115970781550.

The previous prime is 115970781497. The next prime is 115970781559. The reversal of 115970781551 is 155187079511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115970781551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115970781551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115970781559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57985390775 + 57985390776.

It is an arithmetic number, because the mean of its divisors is an integer number (57985390776).

Almost surely, 2^115970781551 is an apocalyptic number.

115970781551 is a deficient number, since it is larger than the sum of its proper divisors (1).

115970781551 is an equidigital number, since it uses as much as digits as its factorization.

115970781551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441000, while the sum is 50.

The spelling of 115970781551 in words is "one hundred fifteen billion, nine hundred seventy million, seven hundred eighty-one thousand, five hundred fifty-one".