75786474889 has 2 divisors, whose sum is σ = 75786474890. Its totient is φ = 75786474888.

The previous prime is 75786474877. The next prime is 75786474899. The reversal of 75786474889 is 98847468757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68285529225 + 7500945664 = 261315^2 + 86608^2 .

It is a cyclic number.

It is not a de Polignac number, because 75786474889 - 2⁷ = 75786474761 is a prime.

It is a super-2 number, since 2×75786474889² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75786474839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37893237444 + 37893237445.

It is an arithmetic number, because the mean of its divisors is an integer number (37893237445).

Almost surely, 2^75786474889 is an apocalyptic number.

It is an amenable number.

75786474889 is a deficient number, since it is larger than the sum of its proper divisors (1).

75786474889 is an equidigital number, since it uses as much as digits as its factorization.

75786474889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 758661120, while the sum is 73.

The spelling of 75786474889 in words is "seventy-five billion, seven hundred eighty-six million, four hundred seventy-four thousand, eight hundred eighty-nine".