726216404612626 has 4 divisors (see below), whose sum is σ = 1089324606918942. Its totient is φ = 363108202306312.

The previous prime is 726216404612597. The next prime is 726216404612683. The reversal of 726216404612626 is 626216404612627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 568383792321601 + 157832612291025 = 23840801^2 + 12563145^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181554101153155 + ... + 181554101153158.

Almost surely, 2^{726216404612626} is an apocalyptic number.

726216404612626 is a deficient number, since it is larger than the sum of its proper divisors (363108202306316).

726216404612626 is a wasteful number, since it uses less digits than its factorization.

726216404612626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363108202306315.

The product of its (nonzero) digits is 13934592, while the sum is 55.

Subtracting from 726216404612626 its reverse (626216404612627), we obtain a palindrome (99999999999999).

The spelling of 726216404612626 in words is "seven hundred twenty-six trillion, two hundred sixteen billion, four hundred four million, six hundred twelve thousand, six hundred twenty-six".