21346136535 has 32 divisors (see below), whose sum is σ = 34566840000. Its totient is φ = 11247538176.

The previous prime is 21346136527. The next prime is 21346136563. The reversal of 21346136535 is 53563164312.

It is not a de Polignac number, because 21346136535 - 2³ = 21346136527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21346136493 and 21346136502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 551911 + ... + 589319.

It is an arithmetic number, because the mean of its divisors is an integer number (1080213750).

Almost surely, 2^21346136535 is an apocalyptic number.

21346136535 is a deficient number, since it is larger than the sum of its proper divisors (13220703465).

21346136535 is a wasteful number, since it uses less digits than its factorization.

21346136535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37875.

The product of its digits is 194400, while the sum is 39.

The spelling of 21346136535 in words is "twenty-one billion, three hundred forty-six million, one hundred thirty-six thousand, five hundred thirty-five".