21260554543030 has 64 divisors (see below), whose sum is σ = 42350413787136. Its totient is φ = 7620238800000.

The previous prime is 21260554542961. The next prime is 21260554543031. The reversal of 21260554543030 is 3034545506212.

It is a super-2 number, since 2×21260554543030² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21260554543031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1813146 + ... + 6768205.

It is an arithmetic number, because the mean of its divisors is an integer number (661725215424).

Almost surely, 2^{21260554543030} is an apocalyptic number.

21260554543030 is a deficient number, since it is larger than the sum of its proper divisors (21089859244106).

21260554543030 is a wasteful number, since it uses less digits than its factorization.

21260554543030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8581693.

The product of its (nonzero) digits is 432000, while the sum is 40.

The spelling of 21260554543030 in words is "twenty-one trillion, two hundred sixty billion, five hundred fifty-four million, five hundred forty-three thousand, thirty".