55452400243378 has 4 divisors (see below), whose sum is σ = 83178600365070. Its totient is φ = 27726200121688.

The previous prime is 55452400243307. The next prime is 55452400243379. The reversal of 55452400243378 is 87334200425455.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 41614201122649 + 13838199120729 = 6450907^2 + 3719973^2 .

It is not an unprimeable number, because it can be changed into a prime (55452400243379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13863100060843 + ... + 13863100060846.

Almost surely, 2^{55452400243378} is an apocalyptic number.

55452400243378 is a deficient number, since it is larger than the sum of its proper divisors (27726200121692).

55452400243378 is a wasteful number, since it uses less digits than its factorization.

55452400243378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27726200121691.

The product of its (nonzero) digits is 16128000, while the sum is 52.

The spelling of 55452400243378 in words is "fifty-five trillion, four hundred fifty-two billion, four hundred million, two hundred forty-three thousand, three hundred seventy-eight".