55143360436 has 24 divisors (see below), whose sum is σ = 98928910080. Its totient is φ = 26882419872.

The previous prime is 55143360431. The next prime is 55143360443. The reversal of 55143360436 is 63406334155.

It is a super-2 number, since 2×55143360436² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55143360431) 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, 508191 + ... + 607078.

It is an arithmetic number, because the mean of its divisors is an integer number (4122037920).

Almost surely, 2^55143360436 is an apocalyptic number.

It is an amenable number.

55143360436 is a deficient number, since it is larger than the sum of its proper divisors (43785549644).

55143360436 is a wasteful number, since it uses less digits than its factorization.

55143360436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115583 (or 1115581 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 40.

The spelling of 55143360436 in words is "fifty-five billion, one hundred forty-three million, three hundred sixty thousand, four hundred thirty-six".