29640208461 has 16 divisors (see below), whose sum is σ = 39586844160. Its totient is φ = 19726887600.

The previous prime is 29640208447. The next prime is 29640208471. The reversal of 29640208461 is 16480204692.

It is not a de Polignac number, because 29640208461 - 2²² = 29636014157 is a prime.

It is a super-2 number, since 2×29640208461² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29640208471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5921986 + ... + 5926988.

It is an arithmetic number, because the mean of its divisors is an integer number (2474177760).

Almost surely, 2^29640208461 is an apocalyptic number.

It is an amenable number.

29640208461 is a deficient number, since it is larger than the sum of its proper divisors (9946635699).

29640208461 is a wasteful number, since it uses less digits than its factorization.

29640208461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7936.

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 29640208461 in words is "twenty-nine billion, six hundred forty million, two hundred eight thousand, four hundred sixty-one".