75521752412 has 24 divisors (see below), whose sum is σ = 134993570880. Its totient is φ = 36952381440.

The previous prime is 75521752403. The next prime is 75521752417. The reversal of 75521752412 is 21425712557.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 75521752412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75521752417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601264 + ... + 1647752.

It is an arithmetic number, because the mean of its divisors is an integer number (5624732120).

Almost surely, 2^75521752412 is an apocalyptic number.

It is an amenable number.

75521752412 is a deficient number, since it is larger than the sum of its proper divisors (59471818468).

75521752412 is a wasteful number, since it uses less digits than its factorization.

75521752412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55181 (or 55179 counting only the distinct ones).

The product of its digits is 196000, while the sum is 41.

The spelling of 75521752412 in words is "seventy-five billion, five hundred twenty-one million, seven hundred fifty-two thousand, four hundred twelve".