20440545514 has 4 divisors (see below), whose sum is σ = 30660818274. Its totient is φ = 10220272756.

The previous prime is 20440545509. The next prime is 20440545581. The reversal of 20440545514 is 41554504402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41554504402 = 2 ⋅20777252201.

It can be written as a sum of positive squares in only one way, i.e., 20245021225 + 195524289 = 142285^2 + 13983^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20440545514.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110136377 + ... + 5110136380.

Almost surely, 2^20440545514 is an apocalyptic number.

20440545514 is a deficient number, since it is larger than the sum of its proper divisors (10220272760).

20440545514 is a wasteful number, since it uses less digits than its factorization.

20440545514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10220272759.

The product of its (nonzero) digits is 64000, while the sum is 34.

The spelling of 20440545514 in words is "twenty billion, four hundred forty million, five hundred forty-five thousand, five hundred fourteen".