75145780836 has 72 divisors (see below), whose sum is σ = 226630148640. Its totient is φ = 21470221584.

The previous prime is 75145780817. The next prime is 75145780837. The reversal of 75145780836 is 63808754157.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (75145780837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7094650 + ... + 7105233.

Almost surely, 2^75145780836 is an apocalyptic number.

It is an amenable number.

75145780836 is an abundant number, since it is smaller than the sum of its proper divisors (151484367804).

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

75145780836 is a wasteful number, since it uses less digits than its factorization.

75145780836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14199910 (or 14199895 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 75145780836 in words is "seventy-five billion, one hundred forty-five million, seven hundred eighty thousand, eight hundred thirty-six".