674923563545 has 16 divisors (see below), whose sum is σ = 1009755773568. Its totient is φ = 420731571840.

The previous prime is 674923563529. The next prime is 674923563551. The reversal of 674923563545 is 545365329476.

It is a happy number.

It is not a de Polignac number, because 674923563545 - 2⁴ = 674923563529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 876523724 + ... + 876524493.

It is an arithmetic number, because the mean of its divisors is an integer number (63109735848).

Almost surely, 2^674923563545 is an apocalyptic number.

It is an amenable number.

674923563545 is a deficient number, since it is larger than the sum of its proper divisors (334832210023).

674923563545 is a wasteful number, since it uses less digits than its factorization.

674923563545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753048240.

The product of its digits is 81648000, while the sum is 59.

The spelling of 674923563545 in words is "six hundred seventy-four billion, nine hundred twenty-three million, five hundred sixty-three thousand, five hundred forty-five".