61323646443 has 8 divisors (see below), whose sum is σ = 81772924368. Its totient is φ = 40878399744.

The previous prime is 61323646429. The next prime is 61323646463. The reversal of 61323646443 is 34464632316.

It is a happy number.

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

It is not a de Polignac number, because 61323646443 - 2⁴ = 61323646427 is a prime.

It is a super-2 number, since 2×61323646443² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61323646395 and 61323646404.

It is not an unprimeable number, because it can be changed into a prime (61323646463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972130 + ... + 1033287.

It is an arithmetic number, because the mean of its divisors is an integer number (10221615546).

Almost surely, 2^61323646443 is an apocalyptic number.

61323646443 is a deficient number, since it is larger than the sum of its proper divisors (20449277925).

61323646443 is a wasteful number, since it uses less digits than its factorization.

61323646443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015613.

The product of its digits is 746496, while the sum is 42.

The spelling of 61323646443 in words is "sixty-one billion, three hundred twenty-three million, six hundred forty-six thousand, four hundred forty-three".