29901143617 has 4 divisors (see below), whose sum is σ = 31660034436. Its totient is φ = 28142252800.

The previous prime is 29901143603. The next prime is 29901143621. The reversal of 29901143617 is 71634110992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23683978816 + 6217164801 = 153896^2 + 78849^2 .

It is a cyclic number.

It is not a de Polignac number, because 29901143617 - 2²⁷ = 29766925889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29901143677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879445384 + ... + 879445417.

It is an arithmetic number, because the mean of its divisors is an integer number (7915008609).

Almost surely, 2^29901143617 is an apocalyptic number.

It is an amenable number.

29901143617 is a deficient number, since it is larger than the sum of its proper divisors (1758890819).

29901143617 is a wasteful number, since it uses less digits than its factorization.

29901143617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758890818.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 29901143617 in words is "twenty-nine billion, nine hundred one million, one hundred forty-three thousand, six hundred seventeen".