115251778553 has 2 divisors, whose sum is σ = 115251778554. Its totient is φ = 115251778552.

The previous prime is 115251778489. The next prime is 115251778561. The reversal of 115251778553 is 355877152511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77019015529 + 38232763024 = 277523^2 + 195532^2 .

It is a cyclic number.

It is not a de Polignac number, because 115251778553 - 2⁶ = 115251778489 is a prime.

It is not a weakly prime, because it can be changed into another prime (115251778753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57625889276 + 57625889277.

It is an arithmetic number, because the mean of its divisors is an integer number (57625889277).

Almost surely, 2^115251778553 is an apocalyptic number.

It is an amenable number.

115251778553 is a deficient number, since it is larger than the sum of its proper divisors (1).

115251778553 is an equidigital number, since it uses as much as digits as its factorization.

115251778553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1470000, while the sum is 50.

The spelling of 115251778553 in words is "one hundred fifteen billion, two hundred fifty-one million, seven hundred seventy-eight thousand, five hundred fifty-three".