75495843978 has 16 divisors (see below), whose sum is σ = 151141344960. Its totient is φ = 25140338496.

The previous prime is 75495843937. The next prime is 75495843989. The reversal of 75495843978 is 87934859457.

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 7 ways as a sum of consecutive naturals, for example, 6229150 + ... + 6241257.

It is an arithmetic number, because the mean of its divisors is an integer number (9446334060).

Almost surely, 2^75495843978 is an apocalyptic number.

75495843978 is an abundant number, since it is smaller than the sum of its proper divisors (75645500982).

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

75495843978 is a wasteful number, since it uses less digits than its factorization.

75495843978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12471421.

The product of its digits is 304819200, while the sum is 69.

The spelling of 75495843978 in words is "seventy-five billion, four hundred ninety-five million, eight hundred forty-three thousand, nine hundred seventy-eight".