203313121129979 has 16 divisors (see below), whose sum is σ = 247129217169408. Its totient is φ = 163281804158592.

The previous prime is 203313121129949. The next prime is 203313121130003. The reversal of 203313121129979 is 979921121313302.

It is not a de Polignac number, because 203313121129979 - 2¹² = 203313121125883 is a prime.

It is a super-2 number, since 2×203313121129979² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 203313121129979.

It is not an unprimeable number, because it can be changed into a prime (203313121129949) 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, 3830721497 + ... + 3830774570.

It is an arithmetic number, because the mean of its divisors is an integer number (15445576073088).

Almost surely, 2^{203313121129979} is an apocalyptic number.

203313121129979 is a deficient number, since it is larger than the sum of its proper divisors (43816096039429).

203313121129979 is a wasteful number, since it uses less digits than its factorization.

203313121129979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7661496314.

The product of its (nonzero) digits is 1102248, while the sum is 53.

The spelling of 203313121129979 in words is "two hundred three trillion, three hundred thirteen billion, one hundred twenty-one million, one hundred twenty-nine thousand, nine hundred seventy-nine".