21115346264402 has 8 divisors (see below), whose sum is σ = 34109405504076. Its totient is φ = 9745544429712.

The previous prime is 21115346264399. The next prime is 21115346264429. The reversal of 21115346264402 is 20446264351112.

It can be written as a sum of positive squares in 2 ways, for example, as 18368175927721 + 2747170336681 = 4285811^2 + 1657459^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21115346264402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406064351213 + ... + 406064351264.

Almost surely, 2^{21115346264402} is an apocalyptic number.

21115346264402 is a deficient number, since it is larger than the sum of its proper divisors (12994059239674).

21115346264402 is a wasteful number, since it uses less digits than its factorization.

21115346264402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812128702492.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 21115346264402 in words is "twenty-one trillion, one hundred fifteen billion, three hundred forty-six million, two hundred sixty-four thousand, four hundred two".