115212040451 has 4 divisors (see below), whose sum is σ = 115286709552. Its totient is φ = 115137371352.

The previous prime is 115212040369. The next prime is 115212040487. The reversal of 115212040451 is 154040212511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154040212511 = 977 ⋅157666543.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115212040451 is a prime.

It is a super-3 number, since 3×115212040451³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115212040451.

It is not an unprimeable number, because it can be changed into a prime (115212040651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37332236 + ... + 37335321.

It is an arithmetic number, because the mean of its divisors is an integer number (28821677388).

Almost surely, 2^115212040451 is an apocalyptic number.

115212040451 is a deficient number, since it is larger than the sum of its proper divisors (74669101).

115212040451 is an equidigital number, since it uses as much as digits as its factorization.

115212040451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74669100.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 115212040451 its reverse (154040212511), we get a palindrome (269252252962).

The spelling of 115212040451 in words is "one hundred fifteen billion, two hundred twelve million, forty thousand, four hundred fifty-one".