115187877451 has 4 divisors (see below), whose sum is σ = 115188574792. Its totient is φ = 115187180112.

The previous prime is 115187877443. The next prime is 115187877481. The reversal of 115187877451 is 154778781511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 154778781511 = 293 ⋅528255227.

It is a cyclic number.

It is not a de Polignac number, because 115187877451 - 2³ = 115187877443 is a prime.

It is a super-2 number, since 2×115187877451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115187877392 and 115187877401.

It is not an unprimeable number, because it can be changed into a prime (115187877481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54496 + ... + 483058.

It is an arithmetic number, because the mean of its divisors is an integer number (28797143698).

Almost surely, 2^115187877451 is an apocalyptic number.

115187877451 is a deficient number, since it is larger than the sum of its proper divisors (697341).

115187877451 is an equidigital number, since it uses as much as digits as its factorization.

115187877451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697340.

The product of its digits is 2195200, while the sum is 55.

The spelling of 115187877451 in words is "one hundred fifteen billion, one hundred eighty-seven million, eight hundred seventy-seven thousand, four hundred fifty-one".