21474654192 has 120 divisors (see below), whose sum is σ = 61456661760. Its totient is φ = 6996931200.

The previous prime is 21474654169. The next prime is 21474654287. The reversal of 21474654192 is 29145647412.

21474654192 is a `hidden beast` number, since 2 + 14 + 7 + 4 + 6 + 541 + 92 = 666.

It is a super-2 number, since 2×21474654192² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7111659 + ... + 7114677.

It is an arithmetic number, because the mean of its divisors is an integer number (512138848).

Almost surely, 2^21474654192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21474654192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30728330880).

21474654192 is an abundant number, since it is smaller than the sum of its proper divisors (39982007568).

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

21474654192 is a wasteful number, since it uses less digits than its factorization.

21474654192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131 (or 4122 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 21474654192 in words is "twenty-one billion, four hundred seventy-four million, six hundred fifty-four thousand, one hundred ninety-two".