29646142157 has 4 divisors (see below), whose sum is σ = 29657244096. Its totient is φ = 29635040220.

The previous prime is 29646142147. The next prime is 29646142171. The reversal of 29646142157 is 75124164692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29646142157 - 2⁶ = 29646142093 is a prime.

It is a super-2 number, since 2×29646142157² (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 (29646142147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5546963 + ... + 5552304.

It is an arithmetic number, because the mean of its divisors is an integer number (7414311024).

Almost surely, 2^29646142157 is an apocalyptic number.

It is an amenable number.

29646142157 is a deficient number, since it is larger than the sum of its proper divisors (11101939).

29646142157 is a wasteful number, since it uses less digits than its factorization.

29646142157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11101938.

The product of its digits is 725760, while the sum is 47.

The spelling of 29646142157 in words is "twenty-nine billion, six hundred forty-six million, one hundred forty-two thousand, one hundred fifty-seven".