55400235324040 has 32 divisors (see below), whose sum is σ = 131211083664000. Its totient is φ = 20993773385664.

The previous prime is 55400235324029. The next prime is 55400235324073. The reversal of 55400235324040 is 4042353200455.

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, 36447522480 + ... + 36447523999.

It is an arithmetic number, because the mean of its divisors is an integer number (4100346364500).

Almost surely, 2^{55400235324040} is an apocalyptic number.

It is an amenable number.

55400235324040 is an abundant number, since it is smaller than the sum of its proper divisors (75810848339960).

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

55400235324040 is a wasteful number, since it uses less digits than its factorization.

55400235324040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72895046509 (or 72895046505 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 55400235324040 its reverse (4042353200455), we get a palindrome (59442588524495).

The spelling of 55400235324040 in words is "fifty-five trillion, four hundred billion, two hundred thirty-five million, three hundred twenty-four thousand, forty".