55748728786 has 16 divisors (see below), whose sum is σ = 83822760000. Its totient is φ = 27807889680.

The previous prime is 55748728757. The next prime is 55748728817. The reversal of 55748728786 is 68782784755.

It is a super-2 number, since 2×55748728786² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419340 + ... + 1458088.

It is an arithmetic number, because the mean of its divisors is an integer number (5238922500).

Almost surely, 2^55748728786 is an apocalyptic number.

55748728786 is a deficient number, since it is larger than the sum of its proper divisors (28074031214).

55748728786 is a wasteful number, since it uses less digits than its factorization.

55748728786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40449.

The product of its digits is 210739200, while the sum is 67.

The spelling of 55748728786 in words is "fifty-five billion, seven hundred forty-eight million, seven hundred twenty-eight thousand, seven hundred eighty-six".