2664610431651 has 24 divisors (see below), whose sum is σ = 4501017847040. Its totient is φ = 1487224425456.

The previous prime is 2664610431647. The next prime is 2664610431677. The reversal of 2664610431651 is 1561340164662.

2664610431651 is a `hidden beast` number, since 26 + 6 + 4 + 610 + 4 + 3 + 1 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 2664610431651 - 2² = 2664610431647 is a prime.

It is a super-3 number, since 3×2664610431651³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2664610431597 and 2664610431606.

It is not an unprimeable number, because it can be changed into a prime (2664610431451) 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, 491804311 + ... + 491809728.

Almost surely, 2^{2664610431651} is an apocalyptic number.

2664610431651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2664610431651 is a deficient number, since it is larger than the sum of its proper divisors (1836407415389).

2664610431651 is a wasteful number, since it uses less digits than its factorization.

2664610431651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983614095 (or 983614092 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 2664610431651 in words is "two trillion, six hundred sixty-four billion, six hundred ten million, four hundred thirty-one thousand, six hundred fifty-one".