21335377085 has 16 divisors (see below), whose sum is σ = 27994781952. Its totient is φ = 15480619200.

The previous prime is 21335377051. The next prime is 21335377087. The reversal of 21335377085 is 58077353312.

It is not a de Polignac number, because 21335377085 - 2³⁴ = 4155507901 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 (21335377087) 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, 426314 + ... + 473723.

It is an arithmetic number, because the mean of its divisors is an integer number (1749673872).

Almost surely, 2^21335377085 is an apocalyptic number.

It is an amenable number.

21335377085 is a deficient number, since it is larger than the sum of its proper divisors (6659404867).

21335377085 is a wasteful number, since it uses less digits than its factorization.

21335377085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900484.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 21335377085 in words is "twenty-one billion, three hundred thirty-five million, three hundred seventy-seven thousand, eighty-five".