55768126205640 has 32 divisors (see below), whose sum is σ = 167304378617280. Its totient is φ = 14871500321472.

The previous prime is 55768126205621. The next prime is 55768126205647. The reversal of 55768126205640 is 4650262186755.

It is a super-2 number, since 2×55768126205640² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55768126205647) 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, 232367192404 + ... + 232367192643.

It is an arithmetic number, because the mean of its divisors is an integer number (5228261831790).

Almost surely, 2^{55768126205640} is an apocalyptic number.

It is an amenable number.

55768126205640 is an abundant number, since it is smaller than the sum of its proper divisors (111536252411640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55768126205640 is a wasteful number, since it uses less digits than its factorization.

55768126205640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464734385061 (or 464734385057 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 57.

The spelling of 55768126205640 in words is "fifty-five trillion, seven hundred sixty-eight billion, one hundred twenty-six million, two hundred five thousand, six hundred forty".