7780254560 has 96 divisors (see below), whose sum is σ = 20477499840. Its totient is φ = 2773628928.

The previous prime is 7780254541. The next prime is 7780254583. The reversal of 7780254560 is 654520877.

It is a super-2 number, since 2×7780254560² (a number of 21 digits) contains 22 as substring.

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, 4172 + ... + 124811.

It is an arithmetic number, because the mean of its divisors is an integer number (213307290).

Almost surely, 2^7780254560 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 7780254560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10238749920).

7780254560 is an abundant number, since it is smaller than the sum of its proper divisors (12697245280).

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

7780254560 is a wasteful number, since it uses less digits than its factorization.

7780254560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129040 (or 129032 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 7780254560 is about 88205.7512864099. The cubic root of 7780254560 is about 1981.5176066993.

The spelling of 7780254560 in words is "seven billion, seven hundred eighty million, two hundred fifty-four thousand, five hundred sixty".