21046835361 has 8 divisors (see below), whose sum is σ = 28081375840. Its totient is φ = 14021759232.

The previous prime is 21046835317. The next prime is 21046835387. The reversal of 21046835361 is 16353864012.

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

It is not a de Polignac number, because 21046835361 - 2⁶ = 21046835297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21046835311) 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, 2360896 + ... + 2369793.

It is an arithmetic number, because the mean of its divisors is an integer number (3510171980).

Almost surely, 2^21046835361 is an apocalyptic number.

It is an amenable number.

21046835361 is a deficient number, since it is larger than the sum of its proper divisors (7034540479).

21046835361 is a wasteful number, since it uses less digits than its factorization.

21046835361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732175.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 21046835361 in words is "twenty-one billion, forty-six million, eight hundred thirty-five thousand, three hundred sixty-one".