77760845611428 has 192 divisors, whose sum is σ = 222019493068800. Its totient is φ = 20687215294080.

The previous prime is 77760845611399. The next prime is 77760845611439. The reversal of 77760845611428 is 82411654806777.

It is a super-2 number, since 2×77760845611428² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 492492951 + ... + 492650817.

It is an arithmetic number, because the mean of its divisors is an integer number (1156351526400).

Almost surely, 2^{77760845611428} 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 77760845611428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111009746534400).

77760845611428 is an abundant number, since it is smaller than the sum of its proper divisors (144258647457372).

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

77760845611428 is a wasteful number, since it uses less digits than its factorization.

77760845611428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163190 (or 163188 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 66.

The spelling of 77760845611428 in words is "seventy-seven trillion, seven hundred sixty billion, eight hundred forty-five million, six hundred eleven thousand, four hundred twenty-eight".