21460554726 has 16 divisors (see below), whose sum is σ = 46222733424. Its totient is φ = 6603247584.

The previous prime is 21460554697. The next prime is 21460554749. The reversal of 21460554726 is 62745506412.

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, 137567581 + ... + 137567736.

It is an arithmetic number, because the mean of its divisors is an integer number (2888920839).

Almost surely, 2^21460554726 is an apocalyptic number.

21460554726 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21460554726 is an abundant number, since it is smaller than the sum of its proper divisors (24762178698).

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

21460554726 is a wasteful number, since it uses less digits than its factorization.

21460554726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275135335.

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 21460554726 in words is "twenty-one billion, four hundred sixty million, five hundred fifty-four thousand, seven hundred twenty-six".