46814219821 has 2 divisors, whose sum is σ = 46814219822. Its totient is φ = 46814219820.

The previous prime is 46814219797. The next prime is 46814219887. The reversal of 46814219821 is 12891241864.

46814219821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27932436900 + 18881782921 = 167130^2 + 137411^2 .

It is a cyclic number.

It is not a de Polignac number, because 46814219821 - 2²⁵ = 46780665389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46814219891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23407109910 + 23407109911.

It is an arithmetic number, because the mean of its divisors is an integer number (23407109911).

Almost surely, 2^46814219821 is an apocalyptic number.

It is an amenable number.

46814219821 is a deficient number, since it is larger than the sum of its proper divisors (1).

46814219821 is an equidigital number, since it uses as much as digits as its factorization.

46814219821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 46.

The spelling of 46814219821 in words is "forty-six billion, eight hundred fourteen million, two hundred nineteen thousand, eight hundred twenty-one".