29971969919 has 8 divisors (see below), whose sum is σ = 31750397040. Its totient is φ = 28213638336.

The previous prime is 29971969879. The next prime is 29971969927. The reversal of 29971969919 is 91996917992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29971969919 is a prime.

It is a super-2 number, since 2×29971969919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29971969999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5020814 + ... + 5026779.

It is an arithmetic number, because the mean of its divisors is an integer number (3968799630).

Almost surely, 2^29971969919 is an apocalyptic number.

29971969919 is a deficient number, since it is larger than the sum of its proper divisors (1778427121).

29971969919 is a wasteful number, since it uses less digits than its factorization.

29971969919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047769.

The product of its digits is 44641044, while the sum is 71.

The spelling of 29971969919 in words is "twenty-nine billion, nine hundred seventy-one million, nine hundred sixty-nine thousand, nine hundred nineteen".