29998862490979 has 16 divisors (see below), whose sum is σ = 31620861960192. Its totient is φ = 28404358190208.

The previous prime is 29998862490977. The next prime is 29998862491009. The reversal of 29998862490979 is 97909426889992.

It is a cyclic number.

It is not a de Polignac number, because 29998862490979 - 2¹ = 29998862490977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29998862490893 and 29998862490902.

It is not an unprimeable number, because it can be changed into a prime (29998862490973) 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, 10297494 + ... + 12885499.

It is an arithmetic number, because the mean of its divisors is an integer number (1976303872512).

Almost surely, 2^{29998862490979} is an apocalyptic number.

29998862490979 is a deficient number, since it is larger than the sum of its proper divisors (1621999469213).

29998862490979 is a wasteful number, since it uses less digits than its factorization.

29998862490979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23183586.

The product of its (nonzero) digits is 22856214528, while the sum is 91.

The spelling of 29998862490979 in words is "twenty-nine trillion, nine hundred ninety-eight billion, eight hundred sixty-two million, four hundred ninety thousand, nine hundred seventy-nine".