202109936473 has 2 divisors, whose sum is σ = 202109936474. Its totient is φ = 202109936472.

The previous prime is 202109936453. The next prime is 202109936503. The reversal of 202109936473 is 374639901202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191216422089 + 10893514384 = 437283^2 + 104372^2 .

It is a cyclic number.

It is not a de Polignac number, because 202109936473 - 2¹³ = 202109928281 is a prime.

It is a super-2 number, since 2×202109936473² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202109936453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101054968236 + 101054968237.

It is an arithmetic number, because the mean of its divisors is an integer number (101054968237).

Almost surely, 2^202109936473 is an apocalyptic number.

It is an amenable number.

202109936473 is a deficient number, since it is larger than the sum of its proper divisors (1).

202109936473 is an equidigital number, since it uses as much as digits as its factorization.

202109936473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 202109936473 in words is "two hundred two billion, one hundred nine million, nine hundred thirty-six thousand, four hundred seventy-three".