21341401756 has 12 divisors (see below), whose sum is σ = 37353096592. Its totient is φ = 10669088448.

The previous prime is 21341401751. The next prime is 21341401801. The reversal of 21341401756 is 65710414312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341401751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373080 + ... + 426463.

Almost surely, 2^21341401756 is an apocalyptic number.

It is an amenable number.

21341401756 is a deficient number, since it is larger than the sum of its proper divisors (16011694836).

21341401756 is a wasteful number, since it uses less digits than its factorization.

21341401756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806220 (or 806218 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 21341401756 in words is "twenty-one billion, three hundred forty-one million, four hundred one thousand, seven hundred fifty-six".