75172358506 has 16 divisors (see below), whose sum is σ = 130979473920. Its totient is φ = 31688581680.

The previous prime is 75172358483. The next prime is 75172358509. The reversal of 75172358506 is 60585327157.

It is a self number, because there is not a number n which added to its sum of digits gives 75172358506.

It is not an unprimeable number, because it can be changed into a prime (75172358509) 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, 44011066 + ... + 44012773.

It is an arithmetic number, because the mean of its divisors is an integer number (8186217120).

Almost surely, 2^75172358506 is an apocalyptic number.

75172358506 is a deficient number, since it is larger than the sum of its proper divisors (55807115414).

75172358506 is a wasteful number, since it uses less digits than its factorization.

75172358506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88023909.

The product of its (nonzero) digits is 1764000, while the sum is 49.

The spelling of 75172358506 in words is "seventy-five billion, one hundred seventy-two million, three hundred fifty-eight thousand, five hundred six".