115539000781 has 8 divisors (see below), whose sum is σ = 116047712000. Its totient is φ = 115030532160.

The previous prime is 115539000761. The next prime is 115539000799. The reversal of 115539000781 is 187000935511.

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 115539000781 - 2¹³ = 115538992589 is a prime.

It is a super-2 number, since 2×115539000781² (a number of 23 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 (115539000761) 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, 929380 + ... + 1046338.

It is an arithmetic number, because the mean of its divisors is an integer number (14505964000).

Almost surely, 2^115539000781 is an apocalyptic number.

115539000781 is the 152013-rd centered decagonal number.

It is an amenable number.

115539000781 is a deficient number, since it is larger than the sum of its proper divisors (508711219).

115539000781 is a wasteful number, since it uses less digits than its factorization.

115539000781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121299.

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 115539000781 in words is "one hundred fifteen billion, five hundred thirty-nine million, seven hundred eighty-one", and thus it is an aban number.