212580401386 has 8 divisors (see below), whose sum is σ = 319816806660. Its totient is φ = 105974799168.

The previous prime is 212580401359. The next prime is 212580401413. The reversal of 212580401386 is 683104085212.

It is an interprime number because it is at equal distance from previous prime (212580401359) and next prime (212580401413).

It can be written as a sum of positive squares in 2 ways, for example, as 197789220225 + 14791181161 = 444735^2 + 121619^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157699921 + ... + 157701268.

Almost surely, 2^212580401386 is an apocalyptic number.

212580401386 is a deficient number, since it is larger than the sum of its proper divisors (107236405274).

212580401386 is a wasteful number, since it uses less digits than its factorization.

212580401386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315401528.

The product of its (nonzero) digits is 92160, while the sum is 40.

Adding to 212580401386 its reverse (683104085212), we get a palindrome (895684486598).

The spelling of 212580401386 in words is "two hundred twelve billion, five hundred eighty million, four hundred one thousand, three hundred eighty-six".