21373391041002 has 384 divisors, whose sum is σ = 63586090713600. Its totient is φ = 5113179509760.

The previous prime is 21373391040977. The next prime is 21373391041019. The reversal of 21373391041002 is 20014019337312.

21373391041002 is a `hidden beast` number, since 213 + 7 + 339 + 1 + 0 + 4 + 100 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 403450588 + ... + 403503560.

It is an arithmetic number, because the mean of its divisors is an integer number (165588777900).

Almost surely, 2^{21373391041002} is an apocalyptic number.

21373391041002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21373391041002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31793045356800).

21373391041002 is an abundant number, since it is smaller than the sum of its proper divisors (42212699672598).

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

21373391041002 is a wasteful number, since it uses less digits than its factorization.

21373391041002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53483 (or 53466 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 21373391041002 in words is "twenty-one trillion, three hundred seventy-three billion, three hundred ninety-one million, forty-one thousand, two".