7973577780 has 48 divisors (see below), whose sum is σ = 25515450240. Its totient is φ = 1822531968.

The previous prime is 7973577743. The next prime is 7973577809. The reversal of 7973577780 is 877753797.

It is a super-2 number, since 2×7973577780² (a number of 21 digits) contains 22 as substring.

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, 9491935 + ... + 9492774.

It is an arithmetic number, because the mean of its divisors is an integer number (531571880).

Almost surely, 2^7973577780 is an apocalyptic number.

7973577780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7973577780 is an abundant number, since it is smaller than the sum of its proper divisors (17541872460).

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

7973577780 is a wasteful number, since it uses less digits than its factorization.

7973577780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18984728 (or 18984726 counting only the distinct ones).

The product of its (nonzero) digits is 18151560, while the sum is 60.

The square root of 7973577780 is about 89294.8922391421. The cubic root of 7973577780 is about 1997.7957198003.

The spelling of 7973577780 in words is "seven billion, nine hundred seventy-three million, five hundred seventy-seven thousand, seven hundred eighty".