213166113154 has 8 divisors (see below), whose sum is σ = 330775003260. Its totient is φ = 102907778736.

The previous prime is 213166113151. The next prime is 213166113157. The reversal of 213166113154 is 451311661312.

It is an interprime number because it is at equal distance from previous prime (213166113151) and next prime (213166113157).

It can be written as a sum of positive squares in 2 ways, for example, as 212173548129 + 992565025 = 460623^2 + 31505^2 .

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

It is not an unprimeable number, because it can be changed into a prime (213166113151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1837638849 + ... + 1837638964.

Almost surely, 2^213166113154 is an apocalyptic number.

213166113154 is a deficient number, since it is larger than the sum of its proper divisors (117608890106).

213166113154 is a wasteful number, since it uses less digits than its factorization.

213166113154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675277844.

The product of its digits is 12960, while the sum is 34.

Adding to 213166113154 its reverse (451311661312), we get a palindrome (664477774466).

The spelling of 213166113154 in words is "two hundred thirteen billion, one hundred sixty-six million, one hundred thirteen thousand, one hundred fifty-four".