74445741677 has 4 divisors (see below), whose sum is σ = 76261491516. Its totient is φ = 72629991840.

The previous prime is 74445741659. The next prime is 74445741749. The reversal of 74445741677 is 77614754447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8777066596 + 65668675081 = 93686^2 + 256259^2 .

It is a cyclic number.

It is not a de Polignac number, because 74445741677 - 2¹⁴ = 74445725293 is a prime.

It is a super-2 number, since 2×74445741677² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74445741577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907874858 + ... + 907874939.

It is an arithmetic number, because the mean of its divisors is an integer number (19065372879).

Almost surely, 2^74445741677 is an apocalyptic number.

It is an amenable number.

74445741677 is a deficient number, since it is larger than the sum of its proper divisors (1815749839).

74445741677 is a wasteful number, since it uses less digits than its factorization.

74445741677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815749838.

The product of its digits is 18439680, while the sum is 56.

The spelling of 74445741677 in words is "seventy-four billion, four hundred forty-five million, seven hundred forty-one thousand, six hundred seventy-seven".