21740000054 has 8 divisors (see below), whose sum is σ = 32610992040. Its totient is φ = 10869669376.

The previous prime is 21740000033. The next prime is 21740000057. The reversal of 21740000054 is 45000004712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21739999984 and 21740000029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21740000057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72779 + ... + 220854.

It is an arithmetic number, because the mean of its divisors is an integer number (4076374005).

Almost surely, 2^21740000054 is an apocalyptic number.

21740000054 is a deficient number, since it is larger than the sum of its proper divisors (10870991986).

21740000054 is a wasteful number, since it uses less digits than its factorization.

21740000054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330654.

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 21740000054 its reverse (45000004712), we get a palindrome (66740004766).

The spelling of 21740000054 in words is "twenty-one billion, seven hundred forty million, fifty-four", and thus it is an aban number.