29771889542 has 16 divisors (see below), whose sum is σ = 44758754880. Its totient is φ = 14852329128.

The previous prime is 29771889493. The next prime is 29771889559. The reversal of 29771889542 is 24598817792.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3482309 + ... + 3490847.

It is an arithmetic number, because the mean of its divisors is an integer number (2797422180).

Almost surely, 2^29771889542 is an apocalyptic number.

29771889542 is a deficient number, since it is larger than the sum of its proper divisors (14986865338).

29771889542 is a wasteful number, since it uses less digits than its factorization.

29771889542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12275.

The product of its digits is 20321280, while the sum is 62.

The spelling of 29771889542 in words is "twenty-nine billion, seven hundred seventy-one million, eight hundred eighty-nine thousand, five hundred forty-two".