21937469029 has 16 divisors (see below), whose sum is σ = 25139911168. Its totient is φ = 18752228352.

The previous prime is 21937469009. The next prime is 21937469039. The reversal of 21937469029 is 92096473912.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21937469029 - 2⁵ = 21937468997 is a prime.

It is a super-3 number, since 3×21937469029³ (a number of 32 digits) contains 333 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 (21937469009) 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, 5357707 + ... + 5361799.

It is an arithmetic number, because the mean of its divisors is an integer number (1571244448).

Almost surely, 2^21937469029 is an apocalyptic number.

It is an amenable number.

21937469029 is a deficient number, since it is larger than the sum of its proper divisors (3202442139).

21937469029 is a wasteful number, since it uses less digits than its factorization.

21937469029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 21937469029 in words is "twenty-one billion, nine hundred thirty-seven million, four hundred sixty-nine thousand, twenty-nine".