74373437745 has 24 divisors (see below), whose sum is σ = 130467145536. Its totient is φ = 39187929888.

The previous prime is 74373437741. The next prime is 74373437779. The reversal of 74373437745 is 54773437347.

74373437745 is a `hidden beast` number, since 74 + 3 + 73 + 437 + 74 + 5 = 666.

It is not a de Polignac number, because 74373437745 - 2² = 74373437741 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74373437691 and 74373437700.

It is not an unprimeable number, because it can be changed into a prime (74373437741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9952549 + ... + 9960018.

It is an arithmetic number, because the mean of its divisors is an integer number (5436131064).

Almost surely, 2^74373437745 is an apocalyptic number.

It is an amenable number.

74373437745 is a deficient number, since it is larger than the sum of its proper divisors (56093707791).

74373437745 is a wasteful number, since it uses less digits than its factorization.

74373437745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19912661 (or 19912658 counting only the distinct ones).

The product of its digits is 20744640, while the sum is 54.

The spelling of 74373437745 in words is "seventy-four billion, three hundred seventy-three million, four hundred thirty-seven thousand, seven hundred forty-five".