74274381745 has 8 divisors (see below), whose sum is σ = 89130853800. Its totient is φ = 59418441600.

The previous prime is 74274381691. The next prime is 74274381757. The reversal of 74274381745 is 54718347247.

It can be written as a sum of positive squares in 4 ways, for example, as 5458402161 + 68815979584 = 73881^2 + 262328^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74274381745 - 2¹⁹ = 74273857457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74274381692 and 74274381701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305931 + ... + 492079.

It is an arithmetic number, because the mean of its divisors is an integer number (11141356725).

Almost surely, 2^74274381745 is an apocalyptic number.

It is an amenable number.

74274381745 is a deficient number, since it is larger than the sum of its proper divisors (14856472055).

74274381745 is a wasteful number, since it uses less digits than its factorization.

74274381745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265955.

The product of its digits is 5268480, while the sum is 52.

The spelling of 74274381745 in words is "seventy-four billion, two hundred seventy-four million, three hundred eighty-one thousand, seven hundred forty-five".