21737700412 has 6 divisors (see below), whose sum is σ = 38040975728. Its totient is φ = 10868850204.

The previous prime is 21737700401. The next prime is 21737700419. The reversal of 21737700412 is 21400773712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21737700419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2717212548 + ... + 2717212555.

Almost surely, 2^21737700412 is an apocalyptic number.

It is an amenable number.

21737700412 is a deficient number, since it is larger than the sum of its proper divisors (16303275316).

21737700412 is a wasteful number, since it uses less digits than its factorization.

21737700412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434425107 (or 5434425105 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The spelling of 21737700412 in words is "twenty-one billion, seven hundred thirty-seven million, seven hundred thousand, four hundred twelve".