115451145540 has 36 divisors (see below), whose sum is σ = 350201808684. Its totient is φ = 30786972096.

The previous prime is 115451145517. The next prime is 115451145541. The reversal of 115451145540 is 45541154511.

115451145540 is a `hidden beast` number, since 1 + 1 + 54 + 51 + 1 + 4 + 554 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46601583876 + 68849561664 = 215874^2 + 262392^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 115451145495 and 115451145504.

It is not an unprimeable number, because it can be changed into a prime (115451145541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320697447 + ... + 320697806.

It is an arithmetic number, because the mean of its divisors is an integer number (9727828019).

Almost surely, 2^115451145540 is an apocalyptic number.

115451145540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115451145540 is an abundant number, since it is smaller than the sum of its proper divisors (234750663144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115451145540 is a wasteful number, since it uses less digits than its factorization.

115451145540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641395268 (or 641395263 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

The spelling of 115451145540 in words is "one hundred fifteen billion, four hundred fifty-one million, one hundred forty-five thousand, five hundred forty".