21374326421704 has 64 divisors (see below), whose sum is σ = 41008951090800. Its totient is φ = 10440407617536.

The previous prime is 21374326421687. The next prime is 21374326421711. The reversal of 21374326421704 is 40712462347312.

It can be written as a sum of positive squares in 8 ways, for example, as 18750891852900 + 2623434568804 = 4330230^2 + 1619702^2 .

It is a super-4 number, since 4×21374326421704⁴ (a number of 54 digits) contains 4444 as substring.

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, 140181732 + ... + 140334124.

Almost surely, 2^{21374326421704} is an apocalyptic number.

It is an amenable number.

21374326421704 is a deficient number, since it is larger than the sum of its proper divisors (19634624669096).

21374326421704 is a wasteful number, since it uses less digits than its factorization.

21374326421704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153874 (or 153870 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 46.

The spelling of 21374326421704 in words is "twenty-one trillion, three hundred seventy-four billion, three hundred twenty-six million, four hundred twenty-one thousand, seven hundred four".