77433625820 has 24 divisors (see below), whose sum is σ = 166576728528. Its totient is φ = 30218000000.

The previous prime is 77433625817. The next prime is 77433625823. The reversal of 77433625820 is 2852633477.

It is an interprime number because it is at equal distance from previous prime (77433625817) and next prime (77433625823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77433625823) 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 7 ways as a sum of consecutive naturals, for example, 47214806 + ... + 47216445.

It is an arithmetic number, because the mean of its divisors is an integer number (6940697022).

Almost surely, 2^77433625820 is an apocalyptic number.

It is an amenable number.

77433625820 is an abundant number, since it is smaller than the sum of its proper divisors (89143102708).

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

77433625820 is a wasteful number, since it uses less digits than its factorization.

77433625820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94431301 (or 94431299 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 77433625820 in words is "seventy-seven billion, four hundred thirty-three million, six hundred twenty-five thousand, eight hundred twenty".