21414337692 has 24 divisors (see below), whose sum is σ = 54509223552. Its totient is φ = 6489193200.

The previous prime is 21414337667. The next prime is 21414337709. The reversal of 21414337692 is 29673341412.

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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81114784 + ... + 81115047.

It is an arithmetic number, because the mean of its divisors is an integer number (2271217648).

Almost surely, 2^21414337692 is an apocalyptic number.

21414337692 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21414337692 is an abundant number, since it is smaller than the sum of its proper divisors (33094885860).

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

21414337692 is a wasteful number, since it uses less digits than its factorization.

21414337692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162229849 (or 162229847 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The spelling of 21414337692 in words is "twenty-one billion, four hundred fourteen million, three hundred thirty-seven thousand, six hundred ninety-two".