45549877778 has 8 divisors (see below), whose sum is σ = 68648631600. Its totient is φ = 22667000580.

The previous prime is 45549877777. The next prime is 45549877799. The reversal of 45549877778 is 87777894554.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45549877777) 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, 53968628 + ... + 53969471.

It is an arithmetic number, because the mean of its divisors is an integer number (8581078950).

Almost surely, 2^45549877778 is an apocalyptic number.

45549877778 is a deficient number, since it is larger than the sum of its proper divisors (23098753822).

45549877778 is a wasteful number, since it uses less digits than its factorization.

45549877778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107938312.

The product of its digits is 553190400, while the sum is 71.

The spelling of 45549877778 in words is "forty-five billion, five hundred forty-nine million, eight hundred seventy-seven thousand, seven hundred seventy-eight".