23217278111451 has 16 divisors (see below), whose sum is σ = 34396086564000. Its totient is φ = 15478131861504.

The previous prime is 23217278111431. The next prime is 23217278111483. The reversal of 23217278111451 is 15411187271232.

23217278111451 is a `hidden beast` number, since 2 + 3 + 2 + 17 + 2 + 78 + 111 + 451 = 666.

It is not a de Polignac number, because 23217278111451 - 2⁷ = 23217278111323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23217278111397 and 23217278111406.

It is not an unprimeable number, because it can be changed into a prime (23217278111431) 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, 7434955 + ... + 10085291.

It is an arithmetic number, because the mean of its divisors is an integer number (2149755410250).

Almost surely, 2^{23217278111451} is an apocalyptic number.

23217278111451 is a deficient number, since it is larger than the sum of its proper divisors (11178808452549).

23217278111451 is a wasteful number, since it uses less digits than its factorization.

23217278111451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974795 (or 2974789 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

The spelling of 23217278111451 in words is "twenty-three trillion, two hundred seventeen billion, two hundred seventy-eight million, one hundred eleven thousand, four hundred fifty-one".