21274726060406 has 32 divisors (see below), whose sum is σ = 39449441283840. Its totient is φ = 8379298586016.

The previous prime is 21274726060387. The next prime is 21274726060531. The reversal of 21274726060406 is 60406062747212.

It is a super-2 number, since 2×21274726060406² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257434676 + ... + 257517303.

It is an arithmetic number, because the mean of its divisors is an integer number (1232795040120).

Almost surely, 2^{21274726060406} is an apocalyptic number.

21274726060406 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21274726060406 is a deficient number, since it is larger than the sum of its proper divisors (18174715223434).

21274726060406 is a wasteful number, since it uses less digits than its factorization.

21274726060406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514952228.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 21274726060406 in words is "twenty-one trillion, two hundred seventy-four billion, seven hundred twenty-six million, sixty thousand, four hundred six".