2278273712091 has 24 divisors (see below), whose sum is σ = 3295881743616. Its totient is φ = 1399227130080.

The previous prime is 2278273712089. The next prime is 2278273712107. The reversal of 2278273712091 is 1902173728722.

It is a happy number.

It is not a de Polignac number, because 2278273712091 - 2¹ = 2278273712089 is a prime.

It is a super-2 number, since 2×2278273712091² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2278273752091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4211815 + ... + 4721856.

It is an arithmetic number, because the mean of its divisors is an integer number (137328405984).

Almost surely, 2^{2278273712091} is an apocalyptic number.

2278273712091 is a deficient number, since it is larger than the sum of its proper divisors (1017608031525).

2278273712091 is a wasteful number, since it uses less digits than its factorization.

2278273712091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8934203 (or 8934190 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 51.

The spelling of 2278273712091 in words is "two trillion, two hundred seventy-eight billion, two hundred seventy-three million, seven hundred twelve thousand, ninety-one".