115291402889 has 8 divisors (see below), whose sum is σ = 124180302792. Its totient is φ = 106405407360.

The previous prime is 115291402843. The next prime is 115291402943. The reversal of 115291402889 is 988204192511.

It can be written as a sum of positive squares in 4 ways, for example, as 58078590025 + 57212812864 = 240995^2 + 239192^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115291402889 - 2¹² = 115291398793 is a prime.

It is a super-2 number, since 2×115291402889² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115291402829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643292 + ... + 802749.

It is an arithmetic number, because the mean of its divisors is an integer number (15522537849).

Almost surely, 2^115291402889 is an apocalyptic number.

It is an amenable number.

115291402889 is a deficient number, since it is larger than the sum of its proper divisors (8888899903).

115291402889 is a wasteful number, since it uses less digits than its factorization.

115291402889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452187.

The product of its (nonzero) digits is 414720, while the sum is 50.

The spelling of 115291402889 in words is "one hundred fifteen billion, two hundred ninety-one million, four hundred two thousand, eight hundred eighty-nine".