7777740000000 has 288 divisors, whose sum is σ = 25875297040320. Its totient is φ = 2074048000000.

The previous prime is 7777739999987. The next prime is 7777740000001. The reversal of 7777740000000 is 477777.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (7777740000001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59935186 + ... + 60064814.

It is an arithmetic number, because the mean of its divisors is an integer number (89844781390).

Almost surely, 2^{7777740000000} 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 7777740000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12937648520160).

7777740000000 is an abundant number, since it is smaller than the sum of its proper divisors (18097557040320).

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

7777740000000 is an frugal number, since it uses more digits than its factorization.

7777740000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129683 (or 129639 counting only the distinct ones).

The product of its (nonzero) digits is 67228, while the sum is 39.

Adding to 7777740000000 its reverse (477777), we get a palindrome (7777740477777).

The spelling of 7777740000000 in words is "seven trillion, seven hundred seventy-seven billion, seven hundred forty million", and thus it is an aban number.