21124266462642 has 16 divisors (see below), whose sum is σ = 48284037628992. Its totient is φ = 6035504703600.

The previous prime is 21124266462631. The next prime is 21124266462647. The reversal of 21124266462642 is 24626466242112.

It is a junction number, because it is equal to n+sod(n) for n = 21124266462591 and 21124266462600.

It is not an unprimeable number, because it can be changed into a prime (21124266462647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251479362609 + ... + 251479362692.

It is an arithmetic number, because the mean of its divisors is an integer number (3017752351812).

Almost surely, 2^{21124266462642} is an apocalyptic number.

21124266462642 is an abundant number, since it is smaller than the sum of its proper divisors (27159771166350).

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

21124266462642 is a wasteful number, since it uses less digits than its factorization.

21124266462642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502958725313.

The product of its digits is 2654208, while the sum is 48.

The spelling of 21124266462642 in words is "twenty-one trillion, one hundred twenty-four billion, two hundred sixty-six million, four hundred sixty-two thousand, six hundred forty-two".