74888877491 has 2 divisors, whose sum is σ = 74888877492. Its totient is φ = 74888877490.

The previous prime is 74888877461. The next prime is 74888877499. The reversal of 74888877491 is 19477888847.

It is a strong prime.

It is an emirp because it is prime and its reverse (19477888847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74888877491 - 2²² = 74884683187 is a prime.

It is not a weakly prime, because it can be changed into another prime (74888877499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37444438745 + 37444438746.

It is an arithmetic number, because the mean of its divisors is an integer number (37444438746).

Almost surely, 2^74888877491 is an apocalyptic number.

74888877491 is a deficient number, since it is larger than the sum of its proper divisors (1).

74888877491 is an equidigital number, since it uses as much as digits as its factorization.

74888877491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 202309632, while the sum is 71.

The spelling of 74888877491 in words is "seventy-four billion, eight hundred eighty-eight million, eight hundred seventy-seven thousand, four hundred ninety-one".