21829463740 has 36 divisors (see below), whose sum is σ = 53326263816. Its totient is φ = 7484387232.

The previous prime is 21829463731. The next prime is 21829463753. The reversal of 21829463740 is 4736492812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11136502 + ... + 11138461.

It is an arithmetic number, because the mean of its divisors is an integer number (1481285106).

Almost surely, 2^21829463740 is an apocalyptic number.

21829463740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21829463740 is an abundant number, since it is smaller than the sum of its proper divisors (31496800076).

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

21829463740 is a wasteful number, since it uses less digits than its factorization.

21829463740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22274986 (or 22274977 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 21829463740 in words is "twenty-one billion, eight hundred twenty-nine million, four hundred sixty-three thousand, seven hundred forty".