76778229552 has 40 divisors (see below), whose sum is σ = 198553321536. Its totient is φ = 25565702976.

The previous prime is 76778229533. The next prime is 76778229559. The reversal of 76778229552 is 25592287767.

It is a super-2 number, since 2×76778229552² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76778229559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799078 + ... + 889989.

Almost surely, 2^76778229552 is an apocalyptic number.

It is an amenable number.

76778229552 is an abundant number, since it is smaller than the sum of its proper divisors (121775091984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76778229552 is a wasteful number, since it uses less digits than its factorization.

76778229552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690025 (or 1690019 counting only the distinct ones).

The product of its digits is 29635200, while the sum is 60.

The spelling of 76778229552 in words is "seventy-six billion, seven hundred seventy-eight million, two hundred twenty-nine thousand, five hundred fifty-two".