726331440461 has 4 divisors (see below), whose sum is σ = 792361571424. Its totient is φ = 660301309500.

The previous prime is 726331440413. The next prime is 726331440463. The reversal of 726331440461 is 164044133627.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 726331440461 - 2⁶ = 726331440397 is a prime.

It is a super-2 number, since 2×726331440461² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726331440463) 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, 33015065465 + ... + 33015065486.

It is an arithmetic number, because the mean of its divisors is an integer number (198090392856).

Almost surely, 2^726331440461 is an apocalyptic number.

It is an amenable number.

726331440461 is a deficient number, since it is larger than the sum of its proper divisors (66030130963).

726331440461 is a wasteful number, since it uses less digits than its factorization.

726331440461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66030130962.

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

The spelling of 726331440461 in words is "seven hundred twenty-six billion, three hundred thirty-one million, four hundred forty thousand, four hundred sixty-one".