75288978971 has 6 divisors (see below), whose sum is σ = 77796001116. Its totient is φ = 72860301300.

The previous prime is 75288978931. The next prime is 75288979013. The reversal of 75288978971 is 17987988257.

It is not a de Polignac number, because 75288978971 - 2¹⁸ = 75288716827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75288978895 and 75288978904.

It is not an unprimeable number, because it can be changed into a prime (75288978911) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 39171245 + ... + 39173166.

It is an arithmetic number, because the mean of its divisors is an integer number (12966000186).

Almost surely, 2^75288978971 is an apocalyptic number.

75288978971 is a deficient number, since it is larger than the sum of its proper divisors (2507022145).

75288978971 is an equidigital number, since it uses as much as digits as its factorization.

75288978971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78344473 (or 78344442 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 71.

The spelling of 75288978971 in words is "seventy-five billion, two hundred eighty-eight million, nine hundred seventy-eight thousand, nine hundred seventy-one".