74254072491 has 64 divisors (see below), whose sum is σ = 114639831040. Its totient is φ = 47450201760.

The previous prime is 74254072471. The next prime is 74254072547. The reversal of 74254072491 is 19427045247.

74254072491 is a `hidden beast` number, since 7 + 42 + 54 + 0 + 72 + 491 = 666.

It is not a de Polignac number, because 74254072491 - 2⁶ = 74254072427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74254072471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50069436 + ... + 50070918.

It is an arithmetic number, because the mean of its divisors is an integer number (1791247360).

Almost surely, 2^74254072491 is an apocalyptic number.

74254072491 is a deficient number, since it is larger than the sum of its proper divisors (40385758549).

74254072491 is a wasteful number, since it uses less digits than its factorization.

74254072491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 74254072491 in words is "seventy-four billion, two hundred fifty-four million, seventy-two thousand, four hundred ninety-one".