55693912145 has 4 divisors (see below), whose sum is σ = 66832694580. Its totient is φ = 44555129712.

The previous prime is 55693912129. The next prime is 55693912147. The reversal of 55693912145 is 54121939655.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37467022096 + 18226890049 = 193564^2 + 135007^2 .

It is a cyclic number.

It is not a de Polignac number, because 55693912145 - 2⁴ = 55693912129 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55693912093 and 55693912102.

It is not an unprimeable number, because it can be changed into a prime (55693912147) 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, 5569391210 + ... + 5569391219.

It is an arithmetic number, because the mean of its divisors is an integer number (16708173645).

Almost surely, 2^55693912145 is an apocalyptic number.

It is an amenable number.

55693912145 is a deficient number, since it is larger than the sum of its proper divisors (11138782435).

55693912145 is a wasteful number, since it uses less digits than its factorization.

55693912145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11138782434.

The product of its digits is 1458000, while the sum is 50.

The spelling of 55693912145 in words is "fifty-five billion, six hundred ninety-three million, nine hundred twelve thousand, one hundred forty-five".