6694012551 has 16 divisors (see below), whose sum is σ = 9236757600. Its totient is φ = 4307092608.

The previous prime is 6694012543. The next prime is 6694012627. The reversal of 6694012551 is 1552104966.

It is not a de Polignac number, because 6694012551 - 2³ = 6694012543 is a prime.

It is a super-3 number, since 3×6694012551³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6694012541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229585 + ... + 257093.

It is an arithmetic number, because the mean of its divisors is an integer number (577297350).

Almost surely, 2^6694012551 is an apocalyptic number.

6694012551 is a deficient number, since it is larger than the sum of its proper divisors (2542745049).

6694012551 is a wasteful number, since it uses less digits than its factorization.

6694012551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30338.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 6694012551 is about 81816.9453780817. The cubic root of 6694012551 is about 1884.6418934768.

The spelling of 6694012551 in words is "six billion, six hundred ninety-four million, twelve thousand, five hundred fifty-one".