45319779877 has 4 divisors (see below), whose sum is σ = 45464571820. Its totient is φ = 45174987936.

The previous prime is 45319779847. The next prime is 45319779893. The reversal of 45319779877 is 77897791354.

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 2873067201 + 42446712676 = 53601^2 + 206026^2 .

It is a cyclic number.

It is not a de Polignac number, because 45319779877 - 2¹⁹ = 45319255589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45319779847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72395502 + ... + 72396127.

It is an arithmetic number, because the mean of its divisors is an integer number (11366142955).

Almost surely, 2^45319779877 is an apocalyptic number.

It is an amenable number.

45319779877 is a deficient number, since it is larger than the sum of its proper divisors (144791943).

45319779877 is a wasteful number, since it uses less digits than its factorization.

45319779877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144791942.

The product of its digits is 93350880, while the sum is 67.

The spelling of 45319779877 in words is "forty-five billion, three hundred nineteen million, seven hundred seventy-nine thousand, eight hundred seventy-seven".