7779387480 has 64 divisors (see below), whose sum is σ = 23619375360. Its totient is φ = 2049506688.

The previous prime is 7779387467. The next prime is 7779387533. The reversal of 7779387480 is 847839777.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380572 + ... + 400491.

It is an arithmetic number, because the mean of its divisors is an integer number (369052740).

Almost surely, 2^7779387480 is an apocalyptic number.

It is an amenable number.

7779387480 is an abundant number, since it is smaller than the sum of its proper divisors (15839987880).

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

7779387480 is a wasteful number, since it uses less digits than its factorization.

7779387480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781160 (or 781156 counting only the distinct ones).

The product of its (nonzero) digits is 16595712, while the sum is 60.

The square root of 7779387480 is about 88200.8360504593. The cubic root of 7779387480 is about 1981.4439930789.

The spelling of 7779387480 in words is "seven billion, seven hundred seventy-nine million, three hundred eighty-seven thousand, four hundred eighty".