77401225080 has 224 divisors, whose sum is σ = 276470852400. Its totient is φ = 19426065408.

The previous prime is 77401225039. The next prime is 77401225093. The reversal of 77401225080 is 8052210477.

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

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 55 ways as a sum of consecutive naturals, for example, 417651 + ... + 573789.

Almost surely, 2^77401225080 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 77401225080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138235426200).

77401225080 is an abundant number, since it is smaller than the sum of its proper divisors (199069627320).

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

77401225080 is a wasteful number, since it uses less digits than its factorization.

77401225080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156185 (or 156166 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The spelling of 77401225080 in words is "seventy-seven billion, four hundred one million, two hundred twenty-five thousand, eighty".