77247402882 has 64 divisors (see below), whose sum is σ = 173857259520. Its totient is φ = 22703022144.

The previous prime is 77247402833. The next prime is 77247402889. The reversal of 77247402882 is 28820474277.

It is a happy number.

It is a super-2 number, since 2×77247402882² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77247402889) 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 31 ways as a sum of consecutive naturals, for example, 1259943 + ... + 1319829.

It is an arithmetic number, because the mean of its divisors is an integer number (2716519680).

Almost surely, 2^77247402882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77247402882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86928629760).

77247402882 is an abundant number, since it is smaller than the sum of its proper divisors (96609856638).

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

77247402882 is a wasteful number, since it uses less digits than its factorization.

77247402882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60647.

The product of its (nonzero) digits is 2809856, while the sum is 51.

The spelling of 77247402882 in words is "seventy-seven billion, two hundred forty-seven million, four hundred two thousand, eight hundred eighty-two".