74859457749 has 8 divisors (see below), whose sum is σ = 99815627712. Its totient is φ = 49904796480.

The previous prime is 74859457733. The next prime is 74859457763. The reversal of 74859457749 is 94775495847.

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

It is not a de Polignac number, because 74859457749 - 2⁴ = 74859457733 is a prime.

It is a super-2 number, since 2×74859457749² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74859457709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255817 + ... + 463854.

It is an arithmetic number, because the mean of its divisors is an integer number (12476953464).

Almost surely, 2^74859457749 is an apocalyptic number.

It is an amenable number.

74859457749 is a deficient number, since it is larger than the sum of its proper divisors (24956169963).

74859457749 is a wasteful number, since it uses less digits than its factorization.

74859457749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754347.

The product of its digits is 355622400, while the sum is 69.

The spelling of 74859457749 in words is "seventy-four billion, eight hundred fifty-nine million, four hundred fifty-seven thousand, seven hundred forty-nine".