75497655480 has 256 divisors, whose sum is σ = 255605898240. Its totient is φ = 17700249600.

The previous prime is 75497655479. The next prime is 75497655487. The reversal of 75497655480 is 8455679457.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75497655487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8642715 + ... + 8651445.

It is an arithmetic number, because the mean of its divisors is an integer number (998460540).

Almost surely, 2^75497655480 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 75497655480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127802949120).

75497655480 is an abundant number, since it is smaller than the sum of its proper divisors (180108242760).

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

75497655480 is a wasteful number, since it uses less digits than its factorization.

75497655480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9022 (or 9018 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 60.

The spelling of 75497655480 in words is "seventy-five billion, four hundred ninety-seven million, six hundred fifty-five thousand, four hundred eighty".