61494487576 has 32 divisors (see below), whose sum is σ = 115524668160. Its totient is φ = 30687969312.

The previous prime is 61494487573. The next prime is 61494487589. The reversal of 61494487576 is 67578449416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61494487573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13185421 + ... + 13190083.

It is an arithmetic number, because the mean of its divisors is an integer number (3610145880).

Almost surely, 2^61494487576 is an apocalyptic number.

It is an amenable number.

61494487576 is a deficient number, since it is larger than the sum of its proper divisors (54030180584).

61494487576 is a wasteful number, since it uses less digits than its factorization.

61494487576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7495 (or 7491 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 61.

The spelling of 61494487576 in words is "sixty-one billion, four hundred ninety-four million, four hundred eighty-seven thousand, five hundred seventy-six".