55450667721427 has 4 divisors (see below), whose sum is σ = 60491637514296. Its totient is φ = 50409697928560.

The previous prime is 55450667721391. The next prime is 55450667721467. The reversal of 55450667721427 is 72412776605455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55450667721427 - 2²³ = 55450659332819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55450667721467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520484896418 + ... + 2520484896439.

It is an arithmetic number, because the mean of its divisors is an integer number (15122909378574).

Almost surely, 2^{55450667721427} is an apocalyptic number.

55450667721427 is a deficient number, since it is larger than the sum of its proper divisors (5040969792869).

55450667721427 is a wasteful number, since it uses less digits than its factorization.

55450667721427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040969792868.

The product of its (nonzero) digits is 98784000, while the sum is 61.

The spelling of 55450667721427 in words is "fifty-five trillion, four hundred fifty billion, six hundred sixty-seven million, seven hundred twenty-one thousand, four hundred twenty-seven".