21354625214 has 16 divisors (see below), whose sum is σ = 34502133120. Its totient is φ = 9854209440.

The previous prime is 21354625211. The next prime is 21354625219. The reversal of 21354625214 is 41252645312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21354625211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79652 + ... + 221480.

It is an arithmetic number, because the mean of its divisors is an integer number (2156383320).

Almost surely, 2^21354625214 is an apocalyptic number.

21354625214 is a deficient number, since it is larger than the sum of its proper divisors (13147507906).

21354625214 is a wasteful number, since it uses less digits than its factorization.

21354625214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147635.

The product of its digits is 57600, while the sum is 35.

The spelling of 21354625214 in words is "twenty-one billion, three hundred fifty-four million, six hundred twenty-five thousand, two hundred fourteen".