55450156421740 has 24 divisors (see below), whose sum is σ = 116448935072400. Its totient is φ = 22179375599808.

The previous prime is 55450156421729. The next prime is 55450156421743. The reversal of 55450156421740 is 4712465105455.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55450156421743) 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, 42273427 + ... + 43565386.

It is an arithmetic number, because the mean of its divisors is an integer number (4852038961350).

Almost surely, 2^{55450156421740} is an apocalyptic number.

It is an amenable number.

55450156421740 is an abundant number, since it is smaller than the sum of its proper divisors (60998778650660).

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

55450156421740 is a wasteful number, since it uses less digits than its factorization.

55450156421740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85871121 (or 85871119 counting only the distinct ones).

The product of its (nonzero) digits is 3360000, while the sum is 49.

The spelling of 55450156421740 in words is "fifty-five trillion, four hundred fifty billion, one hundred fifty-six million, four hundred twenty-one thousand, seven hundred forty".