7774091101920 has 1536 divisors, whose sum is σ = 30433148928000. Its totient is φ = 1642423910400.

The previous prime is 7774091101891. The next prime is 7774091102009. The reversal of 7774091101920 is 291011904777.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 7774091101920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 17314233856 + ... + 17314234304.

It is an arithmetic number, because the mean of its divisors is an integer number (19813248000).

Almost surely, 2^{7774091101920} 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 7774091101920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15216574464000).

7774091101920 is an abundant number, since it is smaller than the sum of its proper divisors (22659057826080).

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

7774091101920 is a wasteful number, since it uses less digits than its factorization.

7774091101920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 48.

The spelling of 7774091101920 in words is "seven trillion, seven hundred seventy-four billion, ninety-one million, one hundred one thousand, nine hundred twenty".