56781694546 has 8 divisors (see below), whose sum is σ = 87920043264. Its totient is φ = 27475013460.

The previous prime is 56781694523. The next prime is 56781694553. The reversal of 56781694546 is 64549618765.

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

It is a super-2 number, since 2×56781694546² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 457916830 + ... + 457916953.

It is an arithmetic number, because the mean of its divisors is an integer number (10990005408).

Almost surely, 2^56781694546 is an apocalyptic number.

56781694546 is a deficient number, since it is larger than the sum of its proper divisors (31138348718).

56781694546 is a wasteful number, since it uses less digits than its factorization.

56781694546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915833816.

The product of its digits is 43545600, while the sum is 61.

The spelling of 56781694546 in words is "fifty-six billion, seven hundred eighty-one million, six hundred ninety-four thousand, five hundred forty-six".