215145010349 has 2 divisors, whose sum is σ = 215145010350. Its totient is φ = 215145010348.

The previous prime is 215145010321. The next prime is 215145010361. The reversal of 215145010349 is 943010541512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164568148900 + 50576861449 = 405670^2 + 224893^2 .

It is a cyclic number.

It is not a de Polignac number, because 215145010349 - 2³⁶ = 146425533613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215145010649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107572505174 + 107572505175.

It is an arithmetic number, because the mean of its divisors is an integer number (107572505175).

Almost surely, 2^215145010349 is an apocalyptic number.

It is an amenable number.

215145010349 is a deficient number, since it is larger than the sum of its proper divisors (1).

215145010349 is an equidigital number, since it uses as much as digits as its factorization.

215145010349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 215145010349 in words is "two hundred fifteen billion, one hundred forty-five million, ten thousand, three hundred forty-nine".