54405215005542 has 16 divisors (see below), whose sum is σ = 111751252444272. Its totient is φ = 17644934596320.

The previous prime is 54405215005507. The next prime is 54405215005543. The reversal of 54405215005542 is 24550051250445.

It is a junction number, because it is equal to n+sod(n) for n = 54405215005494 and 54405215005503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54405215005543) 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, 122534267809 + ... + 122534268252.

It is an arithmetic number, because the mean of its divisors is an integer number (6984453277767).

Almost surely, 2^{54405215005542} is an apocalyptic number.

54405215005542 is an abundant number, since it is smaller than the sum of its proper divisors (57346037438730).

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

54405215005542 is a wasteful number, since it uses less digits than its factorization.

54405215005542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245068536103.

The product of its (nonzero) digits is 800000, while the sum is 42.

Adding to 54405215005542 its reverse (24550051250445), we get a palindrome (78955266255987).

The spelling of 54405215005542 in words is "fifty-four trillion, four hundred five billion, two hundred fifteen million, five thousand, five hundred forty-two".