21367693093 has 16 divisors (see below), whose sum is σ = 21752663296. Its totient is φ = 20986801920.

The previous prime is 21367693043. The next prime is 21367693097. The reversal of 21367693093 is 39039676312.

It is a cyclic number.

It is not a de Polignac number, because 21367693093 - 2²¹ = 21365595941 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 (21367693097) 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, 8071096 + ... + 8073742.

It is an arithmetic number, because the mean of its divisors is an integer number (1359541456).

Almost surely, 2^21367693093 is an apocalyptic number.

It is an amenable number.

21367693093 is a deficient number, since it is larger than the sum of its proper divisors (384970203).

21367693093 is a wasteful number, since it uses less digits than its factorization.

21367693093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364.

The product of its (nonzero) digits is 1102248, while the sum is 49.

The spelling of 21367693093 in words is "twenty-one billion, three hundred sixty-seven million, six hundred ninety-three thousand, ninety-three".