7777740000 has 120 divisors (see below), whose sum is σ = 25512739560. Its totient is φ = 2074048000.

The previous prime is 7777739933. The next prime is 7777740029. The reversal of 7777740000 is 477777.

It is a tau number, because it is divible by the number of its divisors (120).

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 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, 4815 + ... + 124814.

It is an arithmetic number, because the mean of its divisors is an integer number (212606163).

Almost surely, 2^7777740000 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 7777740000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12756369780).

7777740000 is an abundant number, since it is smaller than the sum of its proper divisors (17734999560).

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

7777740000 is a wasteful number, since it uses less digits than its factorization.

7777740000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129662 (or 129639 counting only the distinct ones).

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

The square root of 7777740000 is about 88191.4961886916. The cubic root of 7777740000 is about 1981.3041097516.

The spelling of 7777740000 in words is "seven billion, seven hundred seventy-seven million, seven hundred forty thousand".