77861148496 has 40 divisors (see below), whose sum is σ = 159460329600. Its totient is φ = 36727246080.

The previous prime is 77861148493. The next prime is 77861148517. The reversal of 77861148496 is 69484116877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77861148493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463165 + ... + 608476.

It is an arithmetic number, because the mean of its divisors is an integer number (3986508240).

Almost surely, 2^77861148496 is an apocalyptic number.

77861148496 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

77861148496 is an abundant number, since it is smaller than the sum of its proper divisors (81599181104).

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

77861148496 is a wasteful number, since it uses less digits than its factorization.

77861148496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071907 (or 1071901 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 61.

The spelling of 77861148496 in words is "seventy-seven billion, eight hundred sixty-one million, one hundred forty-eight thousand, four hundred ninety-six".