77499373770 has 192 divisors, whose sum is σ = 258781146624. Its totient is φ = 15640542720.

The previous prime is 77499373751. The next prime is 77499373837. The reversal of 77499373770 is 7737399477.

77499373770 is a `hidden beast` number, since 7 + 7 + 499 + 3 + 73 + 7 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 77499373698 and 77499373707.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17341 + ... + 394080.

It is an arithmetic number, because the mean of its divisors is an integer number (1347818472).

Almost surely, 2^77499373770 is an apocalyptic number.

77499373770 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 77499373770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129390573312).

77499373770 is an abundant number, since it is smaller than the sum of its proper divisors (181281772854).

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

77499373770 is a wasteful number, since it uses less digits than its factorization.

77499373770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411477 (or 411474 counting only the distinct ones).

The product of its (nonzero) digits is 49009212, while the sum is 63.

The spelling of 77499373770 in words is "seventy-seven billion, four hundred ninety-nine million, three hundred seventy-three thousand, seven hundred seventy".