228767762091 has 16 divisors (see below), whose sum is σ = 332907765120. Its totient is φ = 138582688320.

The previous prime is 228767762063. The next prime is 228767762101. The reversal of 228767762091 is 190267767822.

It is not a de Polignac number, because 228767762091 - 2²⁶ = 228700653227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228767762011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1538881 + ... + 1680978.

It is an arithmetic number, because the mean of its divisors is an integer number (20806735320).

Almost surely, 2^228767762091 is an apocalyptic number.

228767762091 is a deficient number, since it is larger than the sum of its proper divisors (104140003029).

228767762091 is a wasteful number, since it uses less digits than its factorization.

228767762091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222026.

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 228767762091 in words is "two hundred twenty-eight billion, seven hundred sixty-seven million, seven hundred sixty-two thousand, ninety-one".