21340354248 has 48 divisors (see below), whose sum is σ = 57840868800. Its totient is φ = 7108026720.

The previous prime is 21340354223. The next prime is 21340354249. The reversal of 21340354248 is 84245304312.

21340354248 is a `hidden beast` number, since 2 + 1 + 3 + 403 + 5 + 4 + 248 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21340354249) 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, 17388 + ... + 207323.

It is an arithmetic number, because the mean of its divisors is an integer number (1205018100).

Almost surely, 2^21340354248 is an apocalyptic number.

It is an amenable number.

21340354248 is an abundant number, since it is smaller than the sum of its proper divisors (36500514552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21340354248 is a wasteful number, since it uses less digits than its factorization.

21340354248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226042 (or 226035 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 21340354248 in words is "twenty-one billion, three hundred forty million, three hundred fifty-four thousand, two hundred forty-eight".