76666020255 has 48 divisors (see below), whose sum is σ = 145133479296. Its totient is φ = 37129095360.

The previous prime is 76666020251. The next prime is 76666020293. The reversal of 76666020255 is 55202066667.

It is not a de Polignac number, because 76666020255 - 2² = 76666020251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 76666020255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76666020251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 349384 + ... + 524786.

It is an arithmetic number, because the mean of its divisors is an integer number (3023614152).

Almost surely, 2^76666020255 is an apocalyptic number.

76666020255 is a deficient number, since it is larger than the sum of its proper divisors (68467459041).

76666020255 is a wasteful number, since it uses less digits than its factorization.

76666020255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176308 (or 176305 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 76666020255 in words is "seventy-six billion, six hundred sixty-six million, twenty thousand, two hundred fifty-five".