77137323270 has 128 divisors (see below), whose sum is σ = 212545437696. Its totient is φ = 17550884736.

The previous prime is 77137323257. The next prime is 77137323313. The reversal of 77137323270 is 7232373177.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 59017957 + ... + 59019263.

It is an arithmetic number, because the mean of its divisors is an integer number (1660511232).

Almost surely, 2^77137323270 is an apocalyptic number.

77137323270 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 77137323270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106272718848).

77137323270 is an abundant number, since it is smaller than the sum of its proper divisors (135408114426).

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

77137323270 is a wasteful number, since it uses less digits than its factorization.

77137323270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394.

The product of its (nonzero) digits is 259308, while the sum is 42.

The spelling of 77137323270 in words is "seventy-seven billion, one hundred thirty-seven million, three hundred twenty-three thousand, two hundred seventy".