21274714350 has 144 divisors (see below), whose sum is σ = 58253450112. Its totient is φ = 5565257280.

The previous prime is 21274714303. The next prime is 21274714399. The reversal of 21274714350 is 5341747212.

21274714350 is a `hidden beast` number, since 21 + 274 + 7 + 14 + 350 = 666.

It is a super-2 number, since 2×21274714350² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7928109 + ... + 7930791.

It is an arithmetic number, because the mean of its divisors is an integer number (404537848).

Almost surely, 2^21274714350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21274714350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29126725056).

21274714350 is an abundant number, since it is smaller than the sum of its proper divisors (36978735762).

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

21274714350 is a wasteful number, since it uses less digits than its factorization.

21274714350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 3023 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The spelling of 21274714350 in words is "twenty-one billion, two hundred seventy-four million, seven hundred fourteen thousand, three hundred fifty".