29978490841 has 16 divisors (see below), whose sum is σ = 32631313680. Its totient is φ = 27375667200.

The previous prime is 29978490811. The next prime is 29978490851. The reversal of 29978490841 is 14809487992.

It can be written as a sum of positive squares in 8 ways, for example, as 7670081241 + 22308409600 = 87579^2 + 149360^2 .

It is a cyclic number.

It is not a de Polignac number, because 29978490841 - 2¹⁷ = 29978359769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29978490841.

It is not an unprimeable number, because it can be changed into a prime (29978490811) 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, 1683601 + ... + 1701313.

It is an arithmetic number, because the mean of its divisors is an integer number (2039457105).

Almost surely, 2^29978490841 is an apocalyptic number.

It is an amenable number.

29978490841 is a deficient number, since it is larger than the sum of its proper divisors (2652822839).

29978490841 is a wasteful number, since it uses less digits than its factorization.

29978490841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19116.

The product of its (nonzero) digits is 10450944, while the sum is 61.

It can be divided in two parts, 299784 and 90841, that added together give a 8-th power (390625 = 5⁸).

The spelling of 29978490841 in words is "twenty-nine billion, nine hundred seventy-eight million, four hundred ninety thousand, eight hundred forty-one".