7547944980 has 48 divisors (see below), whose sum is σ = 21203138880. Its totient is φ = 2006224128.

The previous prime is 7547944973. The next prime is 7547945017. The reversal of 7547944980 is 894497457.

It is a happy number.

It is a super-2 number, since 2×7547944980² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7547944980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186465 + ... + 223304.

It is an arithmetic number, because the mean of its divisors is an integer number (441732060).

Almost surely, 2^7547944980 is an apocalyptic number.

It is an amenable number.

7547944980 is an abundant number, since it is smaller than the sum of its proper divisors (13655193900).

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

7547944980 is a wasteful number, since it uses less digits than its factorization.

7547944980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410088 (or 410086 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The square root of 7547944980 is about 86878.9098688514. The cubic root of 7547944980 is about 1961.5960361677.

The spelling of 7547944980 in words is "seven billion, five hundred forty-seven million, nine hundred forty-four thousand, nine hundred eighty".