55444140025540 has 48 divisors (see below), whose sum is σ = 133696580379264. Its totient is φ = 18919327392000.

The previous prime is 55444140025501. The next prime is 55444140025649. The reversal of 55444140025540 is 4552004144455.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938429161 + ... + 938488240.

It is an arithmetic number, because the mean of its divisors is an integer number (2785345424568).

Almost surely, 2^{55444140025540} is an apocalyptic number.

It is an amenable number.

55444140025540 is an abundant number, since it is smaller than the sum of its proper divisors (78252440353724).

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

55444140025540 is a wasteful number, since it uses less digits than its factorization.

55444140025540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876917628 (or 1876917626 counting only the distinct ones).

The product of its (nonzero) digits is 1280000, while the sum is 43.

Adding to 55444140025540 its reverse (4552004144455), we get a palindrome (59996144169995).

The spelling of 55444140025540 in words is "fifty-five trillion, four hundred forty-four billion, one hundred forty million, twenty-five thousand, five hundred forty".