115497144378 has 128 divisors (see below), whose sum is σ = 320338851840. Its totient is φ = 29966751360.

The previous prime is 115497144337. The next prime is 115497144419. The reversal of 115497144378 is 873441794511.

115497144378 is a `hidden beast` number, since 1 + 1 + 5 + 497 + 144 + 3 + 7 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (115497144337) and next prime (115497144419).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3948001 + ... + 3977147.

It is an arithmetic number, because the mean of its divisors is an integer number (2502647280).

Almost surely, 2^115497144378 is an apocalyptic number.

115497144378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115497144378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160169425920).

115497144378 is an abundant number, since it is smaller than the sum of its proper divisors (204841707462).

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

115497144378 is a wasteful number, since it uses less digits than its factorization.

115497144378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30129 (or 30123 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The spelling of 115497144378 in words is "one hundred fifteen billion, four hundred ninety-seven million, one hundred forty-four thousand, three hundred seventy-eight".