2666553351 has 32 divisors (see below), whose sum is σ = 4469392896. Its totient is φ = 1385208000.

The previous prime is 2666553317. The next prime is 2666553391. The reversal of 2666553351 is 1533556662.

It is not a de Polignac number, because 2666553351 - 2⁶ = 2666553287 is a prime.

It is a super-2 number, since 2×2666553351² = 14221013547458658402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666553391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19750 + ... + 75651.

It is an arithmetic number, because the mean of its divisors is an integer number (139668528).

Almost surely, 2^2666553351 is an apocalyptic number.

2666553351 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2666553351 is a deficient number, since it is larger than the sum of its proper divisors (1802839545).

2666553351 is an equidigital number, since it uses as much as digits as its factorization.

2666553351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95444 (or 95422 counting only the distinct ones).

The product of its digits is 486000, while the sum is 42.

The square root of 2666553351 is about 51638.6807635517. The cubic root of 2666553351 is about 1386.7029062493.

The spelling of 2666553351 in words is "two billion, six hundred sixty-six million, five hundred fifty-three thousand, three hundred fifty-one".