7545975780 has 288 divisors, whose sum is σ = 25728143616. Its totient is φ = 1618486272.

The previous prime is 7545975733. The next prime is 7545975847. The reversal of 7545975780 is 875795457.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 7545975780.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23804182 + ... + 23804498.

It is an arithmetic number, because the mean of its divisors is an integer number (89333832).

Almost surely, 2^7545975780 is an apocalyptic number.

7545975780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7545975780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12864071808).

7545975780 is an abundant number, since it is smaller than the sum of its proper divisors (18182167836).

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

7545975780 is a wasteful number, since it uses less digits than its factorization.

7545975780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 12348000, while the sum is 57.

The square root of 7545975780 is about 86867.5761144514. The cubic root of 7545975780 is about 1961.4254329595.

The spelling of 7545975780 in words is "seven billion, five hundred forty-five million, nine hundred seventy-five thousand, seven hundred eighty".