674287799549 has 16 divisors (see below), whose sum is σ = 846829267200. Its totient is φ = 533502431280.

The previous prime is 674287799501. The next prime is 674287799599. The reversal of 674287799549 is 945997782476.

It is a de Polignac number, because none of the positive numbers 2^k-674287799549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674287799549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674287799599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75605297 + ... + 75614214.

It is an arithmetic number, because the mean of its divisors is an integer number (52926829200).

Almost surely, 2^674287799549 is an apocalyptic number.

It is an amenable number.

674287799549 is a deficient number, since it is larger than the sum of its proper divisors (172541467651).

674287799549 is a wasteful number, since it uses less digits than its factorization.

674287799549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151219545 (or 151219531 counting only the distinct ones).

The product of its digits is 1920360960, while the sum is 77.

The spelling of 674287799549 in words is "six hundred seventy-four billion, two hundred eighty-seven million, seven hundred ninety-nine thousand, five hundred forty-nine".