999997672254779 has 16 divisors (see below), whose sum is σ = 1096594002593280. Its totient is φ = 904349551848960.

The previous prime is 999997672254751. The next prime is 999997672254781. The reversal of 999997672254779 is 977452276799999.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999997672254779 is a prime.

It is a pancake number, because a pancake can be divided into 999997672254779 parts by 44721307 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999997672254079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58970354 + ... + 74010120.

It is an arithmetic number, because the mean of its divisors is an integer number (68537125162080).

Almost surely, 2^{999997672254779} is an apocalyptic number.

999997672254779 is a deficient number, since it is larger than the sum of its proper divisors (96596330338501).

999997672254779 is a wasteful number, since it uses less digits than its factorization.

999997672254779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071290.

The product of its digits is 612475123680, while the sum is 101.

The spelling of 999997672254779 in words is "nine hundred ninety-nine trillion, nine hundred ninety-seven billion, six hundred seventy-two million, two hundred fifty-four thousand, seven hundred seventy-nine".