33971671421 has 8 divisors (see below), whose sum is σ = 35972573760. Its totient is φ = 31971054528.

The previous prime is 33971671411. The next prime is 33971671427. The reversal of 33971671421 is 12417617933.

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-33971671421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33971671427) 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, 204080 + ... + 331046.

It is an arithmetic number, because the mean of its divisors is an integer number (4496571720).

Almost surely, 2^33971671421 is an apocalyptic number.

It is an amenable number.

33971671421 is a deficient number, since it is larger than the sum of its proper divisors (2000902339).

33971671421 is a wasteful number, since it uses less digits than its factorization.

33971671421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142723.

The product of its digits is 190512, while the sum is 44.

The spelling of 33971671421 in words is "thirty-three billion, nine hundred seventy-one million, six hundred seventy-one thousand, four hundred twenty-one".