115728972377 has 4 divisors (see below), whose sum is σ = 116640224256. Its totient is φ = 114817720500.

The previous prime is 115728972371. The next prime is 115728972433. The reversal of 115728972377 is 773279827511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 773279827511 = 137 ⋅5644378303.

It is a cyclic number.

It is not a de Polignac number, because 115728972377 - 2¹⁰ = 115728971353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115728972371) 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, 455625749 + ... + 455626002.

It is an arithmetic number, because the mean of its divisors is an integer number (29160056064).

Almost surely, 2^115728972377 is an apocalyptic number.

It is an amenable number.

115728972377 is a deficient number, since it is larger than the sum of its proper divisors (911251879).

115728972377 is an equidigital number, since it uses as much as digits as its factorization.

115728972377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911251878.

The product of its digits is 10372320, while the sum is 59.

The spelling of 115728972377 in words is "one hundred fifteen billion, seven hundred twenty-eight million, nine hundred seventy-two thousand, three hundred seventy-seven".