21530004142701 has 16 divisors (see below), whose sum is σ = 29430379440000. Its totient is φ = 13992043054080.

The previous prime is 21530004142679. The next prime is 21530004142771. The reversal of 21530004142701 is 10724140003512.

It is not a de Polignac number, because 21530004142701 - 2¹⁴ = 21530004126317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21530004142771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69918705 + ... + 70225958.

It is an arithmetic number, because the mean of its divisors is an integer number (1839398715000).

Almost surely, 2^{21530004142701} is an apocalyptic number.

It is an amenable number.

21530004142701 is a deficient number, since it is larger than the sum of its proper divisors (7900375297299).

21530004142701 is a wasteful number, since it uses less digits than its factorization.

21530004142701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140145956.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 21530004142701 in words is "twenty-one trillion, five hundred thirty billion, four million, one hundred forty-two thousand, seven hundred one".