999999345223401 has 16 divisors (see below), whose sum is σ = 1338914212972800. Its totient is φ = 663875366128128.

The previous prime is 999999345223399. The next prime is 999999345223409. The reversal of 999999345223401 is 104322543999999.

It is not a de Polignac number, because 999999345223401 - 2¹ = 999999345223399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999999345223409) 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, 394460985 + ... + 396987993.

It is an arithmetic number, because the mean of its divisors is an integer number (83682138310800).

Almost surely, 2^{999999345223401} is an apocalyptic number.

It is an amenable number.

999999345223401 is a deficient number, since it is larger than the sum of its proper divisors (338914867749399).

999999345223401 is a wasteful number, since it uses less digits than its factorization.

999999345223401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079168.

The product of its (nonzero) digits is 1530550080, while the sum is 78.

The spelling of 999999345223401 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, three hundred forty-five million, two hundred twenty-three thousand, four hundred one".