212137626434 has 8 divisors (see below), whose sum is σ = 318546043788. Its totient is φ = 105955611840.

The previous prime is 212137626329. The next prime is 212137626457. The reversal of 212137626434 is 434626731212.

It can be written as a sum of positive squares in 2 ways, for example, as 177337843225 + 34799783209 = 421115^2 + 186547^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 212137626391 and 212137626400.

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, 56598347 + ... + 56602094.

Almost surely, 2^212137626434 is an apocalyptic number.

212137626434 is a deficient number, since it is larger than the sum of its proper divisors (106408417354).

212137626434 is a wasteful number, since it uses less digits than its factorization.

212137626434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113201380.

The product of its digits is 290304, while the sum is 41.

The spelling of 212137626434 in words is "two hundred twelve billion, one hundred thirty-seven million, six hundred twenty-six thousand, four hundred thirty-four".