74787245287 has 2 divisors, whose sum is σ = 74787245288. Its totient is φ = 74787245286.

The previous prime is 74787245279. The next prime is 74787245327. The reversal of 74787245287 is 78254278747.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74787245287 - 2³ = 74787245279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74787245207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37393622643 + 37393622644.

It is an arithmetic number, because the mean of its divisors is an integer number (37393622644).

Almost surely, 2^74787245287 is an apocalyptic number.

74787245287 is a deficient number, since it is larger than the sum of its proper divisors (1).

74787245287 is an equidigital number, since it uses as much as digits as its factorization.

74787245287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49172480, while the sum is 61.

The spelling of 74787245287 in words is "seventy-four billion, seven hundred eighty-seven million, two hundred forty-five thousand, two hundred eighty-seven".