77903041788 has 480 divisors, whose sum is σ = 250695954432. Its totient is φ = 20771251200.

The previous prime is 77903041781. The next prime is 77903041813. The reversal of 77903041788 is 88714030977.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77903041781) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 104848945 + ... + 104849687.

Almost surely, 2^77903041788 is an apocalyptic number.

77903041788 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77903041788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125347977216).

77903041788 is an abundant number, since it is smaller than the sum of its proper divisors (172792912644).

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

77903041788 is a wasteful number, since it uses less digits than its factorization.

77903041788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 77903041788 in words is "seventy-seven billion, nine hundred three million, forty-one thousand, seven hundred eighty-eight".