77822461464 has 64 divisors (see below), whose sum is σ = 212278631040. Its totient is φ = 23578613760.

The previous prime is 77822461447. The next prime is 77822461469. The reversal of 77822461464 is 46416422877.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77822461469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1812792 + ... + 1855224.

It is an arithmetic number, because the mean of its divisors is an integer number (3316853610).

Almost surely, 2^77822461464 is an apocalyptic number.

It is an amenable number.

77822461464 is an abundant number, since it is smaller than the sum of its proper divisors (134456169576).

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

77822461464 is a wasteful number, since it uses less digits than its factorization.

77822461464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49400 (or 49396 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 51.

The spelling of 77822461464 in words is "seventy-seven billion, eight hundred twenty-two million, four hundred sixty-one thousand, four hundred sixty-four".