21534341312501 has 8 divisors (see below), whose sum is σ = 22247980439808. Its totient is φ = 20821888620000.

The previous prime is 21534341312453. The next prime is 21534341312507. The reversal of 21534341312501 is 10521314343512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21534341312501 - 2²² = 21534337118197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21534341312507) 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, 296571800 + ... + 296644401.

It is an arithmetic number, because the mean of its divisors is an integer number (2780997554976).

Almost surely, 2^{21534341312501} is an apocalyptic number.

It is an amenable number.

21534341312501 is a deficient number, since it is larger than the sum of its proper divisors (713639127307).

21534341312501 is a wasteful number, since it uses less digits than its factorization.

21534341312501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593217403.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 21534341312501 in words is "twenty-one trillion, five hundred thirty-four billion, three hundred forty-one million, three hundred twelve thousand, five hundred one".