21034729196 has 12 divisors (see below), whose sum is σ = 39642374352. Its totient is φ = 9708336528.

The previous prime is 21034729159. The next prime is 21034729211. The reversal of 21034729196 is 69192743012.

It is a super-4 number, since 4×21034729196⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202256960 + ... + 202257063.

It is an arithmetic number, because the mean of its divisors is an integer number (3303531196).

Almost surely, 2^21034729196 is an apocalyptic number.

21034729196 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21034729196 is a deficient number, since it is larger than the sum of its proper divisors (18607645156).

21034729196 is a wasteful number, since it uses less digits than its factorization.

21034729196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404514040 (or 404514038 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 21034729196 in words is "twenty-one billion, thirty-four million, seven hundred twenty-nine thousand, one hundred ninety-six".