10505500994 has 4 divisors (see below), whose sum is σ = 15758251494. Its totient is φ = 5252750496.

The previous prime is 10505500979. The next prime is 10505500997. The reversal of 10505500994 is 49900550501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49900550501 = 3571 ⋅13973831.

It can be written as a sum of positive squares in only one way, i.e., 10299205225 + 206295769 = 101485^2 + 14363^2 .

It is a super-2 number, since 2×10505500994² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10505500997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2626375247 + ... + 2626375250.

Almost surely, 2^10505500994 is an apocalyptic number.

10505500994 is a deficient number, since it is larger than the sum of its proper divisors (5252750500).

10505500994 is an equidigital number, since it uses as much as digits as its factorization.

10505500994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252750499.

The product of its (nonzero) digits is 40500, while the sum is 38.

The spelling of 10505500994 in words is "ten billion, five hundred five million, five hundred thousand, nine hundred ninety-four".