21437030629 has 12 divisors (see below), whose sum is σ = 24948199584. Its totient is φ = 18366311544.

The previous prime is 21437030623. The next prime is 21437030647. The reversal of 21437030629 is 92603073412.

It is not a de Polignac number, because 21437030629 - 2⁷ = 21437030501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21437030623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12384 + ... + 207430.

It is an arithmetic number, because the mean of its divisors is an integer number (2079016632).

Almost surely, 2^21437030629 is an apocalyptic number.

It is an amenable number.

21437030629 is a deficient number, since it is larger than the sum of its proper divisors (3511168955).

21437030629 is a wasteful number, since it uses less digits than its factorization.

21437030629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197304 (or 197297 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 21437030629 in words is "twenty-one billion, four hundred thirty-seven million, thirty thousand, six hundred twenty-nine".