7666753551 has 24 divisors (see below), whose sum is σ = 10966663824. Its totient is φ = 4762828800.

The previous prime is 7666753543. The next prime is 7666753579. The reversal of 7666753551 is 1553576667.

It is a happy number.

It is not a de Polignac number, because 7666753551 - 2³ = 7666753543 is a prime.

It is a super-2 number, since 2×7666753551² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 7666753494 and 7666753503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666753541) 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, 43791 + ... + 131343.

It is an arithmetic number, because the mean of its divisors is an integer number (456944326).

Almost surely, 2^7666753551 is an apocalyptic number.

7666753551 is a deficient number, since it is larger than the sum of its proper divisors (3299910273).

7666753551 is a wasteful number, since it uses less digits than its factorization.

7666753551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87691 (or 87674 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 51.

The square root of 7666753551 is about 87559.9997201919. Note that the first 3 decimals coincide. The cubic root of 7666753551 is about 1971.8346819400.

The spelling of 7666753551 in words is "seven billion, six hundred sixty-six million, seven hundred fifty-three thousand, five hundred fifty-one".