45550780993 has 4 divisors (see below), whose sum is σ = 46781883220. Its totient is φ = 44319678768.

The previous prime is 45550780967. The next prime is 45550781021. The reversal of 45550780993 is 39908705554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39908705554 = 2 ⋅19954352777.

It can be written as a sum of positive squares in 2 ways, for example, as 25482375424 + 20068405569 = 159632^2 + 141663^2 .

It is a cyclic number.

It is not a de Polignac number, because 45550780993 - 2¹³ = 45550772801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45550780943) 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, 615551058 + ... + 615551131.

It is an arithmetic number, because the mean of its divisors is an integer number (11695470805).

Almost surely, 2^45550780993 is an apocalyptic number.

It is an amenable number.

45550780993 is a deficient number, since it is larger than the sum of its proper divisors (1231102227).

45550780993 is a wasteful number, since it uses less digits than its factorization.

45550780993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231102226.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 45550780993 in words is "forty-five billion, five hundred fifty million, seven hundred eighty thousand, nine hundred ninety-three".