21069290588 has 6 divisors (see below), whose sum is σ = 36871258536. Its totient is φ = 10534645292.

The previous prime is 21069290581. The next prime is 21069290591. The reversal of 21069290588 is 88509296012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21069290581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2633661320 + ... + 2633661327.

It is an arithmetic number, because the mean of its divisors is an integer number (6145209756).

Almost surely, 2^21069290588 is an apocalyptic number.

It is an amenable number.

21069290588 is a deficient number, since it is larger than the sum of its proper divisors (15801967948).

21069290588 is a wasteful number, since it uses less digits than its factorization.

21069290588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5267322651 (or 5267322649 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 21069290588 in words is "twenty-one billion, sixty-nine million, two hundred ninety thousand, five hundred eighty-eight".