21531402748614 has 16 divisors (see below), whose sum is σ = 46977605997120. Its totient is φ = 6524667499560.

The previous prime is 21531402748519. The next prime is 21531402748631. The reversal of 21531402748614 is 41684720413512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163116687424 + ... + 163116687555.

It is an arithmetic number, because the mean of its divisors is an integer number (2936100374820).

Almost surely, 2^{21531402748614} is an apocalyptic number.

21531402748614 is an abundant number, since it is smaller than the sum of its proper divisors (25446203248506).

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

21531402748614 is a wasteful number, since it uses less digits than its factorization.

21531402748614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326233374995.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 21531402748614 in words is "twenty-one trillion, five hundred thirty-one billion, four hundred two million, seven hundred forty-eight thousand, six hundred fourteen".