29771321142861 has 12 divisors (see below), whose sum is σ = 43003067208192. Its totient is φ = 19847525376456.

The previous prime is 29771321142851. The next prime is 29771321142877. The reversal of 29771321142861 is 16824112317792.

It is a happy number.

29771321142861 is a `hidden beast` number, since 2 + 9 + 77 + 132 + 11 + 428 + 6 + 1 = 666.

It is not a de Polignac number, because 29771321142861 - 2²² = 29771316948557 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 29771321142798 and 29771321142807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29771321142851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13122420 + ... + 15223026.

It is an arithmetic number, because the mean of its divisors is an integer number (3583588934016).

Almost surely, 2^{29771321142861} is an apocalyptic number.

It is an amenable number.

29771321142861 is a deficient number, since it is larger than the sum of its proper divisors (13231746065331).

29771321142861 is a wasteful number, since it uses less digits than its factorization.

29771321142861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3675360 (or 3675357 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 29771321142861 in words is "twenty-nine trillion, seven hundred seventy-one billion, three hundred twenty-one million, one hundred forty-two thousand, eight hundred sixty-one".