76779520000 has 320 divisors, whose sum is σ = 201455638560. Its totient is φ = 29196288000.

The previous prime is 76779519959. The next prime is 76779520067. The reversal of 76779520000 is 2597767.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 471039919 + ... + 471040081.

Almost surely, 2^76779520000 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 76779520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100727819280).

76779520000 is an abundant number, since it is smaller than the sum of its proper divisors (124676118560).

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

76779520000 is an frugal number, since it uses more digits than its factorization.

76779520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 43.

The spelling of 76779520000 in words is "seventy-six billion, seven hundred seventy-nine million, five hundred twenty thousand".