77230001880 has 128 divisors (see below), whose sum is σ = 259073611200. Its totient is φ = 20463446016.

The previous prime is 77230001831. The next prime is 77230001881. The reversal of 77230001880 is 8810003277.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77230001881) 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, 58177 + ... + 397296.

Almost surely, 2^77230001880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77230001880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129536805600).

77230001880 is an abundant number, since it is smaller than the sum of its proper divisors (181843609320).

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

77230001880 is a wasteful number, since it uses less digits than its factorization.

77230001880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455650 (or 455640 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The spelling of 77230001880 in words is "seventy-seven billion, two hundred thirty million, one thousand, eight hundred eighty".