61493453983 has 8 divisors (see below), whose sum is σ = 70119232848. Its totient is φ = 53424177024.

The previous prime is 61493453969. The next prime is 61493454013. The reversal of 61493453983 is 38935439416.

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

It is a cyclic number.

It is not a de Polignac number, because 61493453983 - 2⁵ = 61493453951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61493453783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139125241 + ... + 139125682.

It is an arithmetic number, because the mean of its divisors is an integer number (8764904106).

Almost surely, 2^61493453983 is an apocalyptic number.

61493453983 is a deficient number, since it is larger than the sum of its proper divisors (8625778865).

61493453983 is a wasteful number, since it uses less digits than its factorization.

61493453983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278250953.

The product of its digits is 8398080, while the sum is 55.

The spelling of 61493453983 in words is "sixty-one billion, four hundred ninety-three million, four hundred fifty-three thousand, nine hundred eighty-three".