29681612542 has 4 divisors (see below), whose sum is σ = 44522418816. Its totient is φ = 14840806270.

The previous prime is 29681612483. The next prime is 29681612557. The reversal of 29681612542 is 24521618692.

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

It is a junction number, because it is equal to n+sod(n) for n = 29681612492 and 29681612501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7420403134 + ... + 7420403137.

It is an arithmetic number, because the mean of its divisors is an integer number (11130604704).

Almost surely, 2^29681612542 is an apocalyptic number.

29681612542 is a deficient number, since it is larger than the sum of its proper divisors (14840806274).

29681612542 is a wasteful number, since it uses less digits than its factorization.

29681612542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14840806273.

The product of its digits is 414720, while the sum is 46.

It can be divided in two parts, 2968161 and 2542, that added together give a triangular number (2970703 = T₂₄₃₇).

The spelling of 29681612542 in words is "twenty-nine billion, six hundred eighty-one million, six hundred twelve thousand, five hundred forty-two".