77450784152 has 48 divisors (see below), whose sum is σ = 174379014720. Its totient is φ = 32122440000.

The previous prime is 77450784139. The next prime is 77450784157. The reversal of 77450784152 is 25148705477.

It is a self number, because there is not a number n which added to its sum of digits gives 77450784152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77450784157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3174599 + ... + 3198902.

It is an arithmetic number, because the mean of its divisors is an integer number (3632896140).

Almost surely, 2^77450784152 is an apocalyptic number.

It is an amenable number.

77450784152 is an abundant number, since it is smaller than the sum of its proper divisors (96928230568).

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

77450784152 is a wasteful number, since it uses less digits than its factorization.

77450784152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6373552 (or 6373541 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 50.

The spelling of 77450784152 in words is "seventy-seven billion, four hundred fifty million, seven hundred eighty-four thousand, one hundred fifty-two".