10140491645 has 4 divisors (see below), whose sum is σ = 12168589980. Its totient is φ = 8112393312.

The previous prime is 10140491629. The next prime is 10140491651. The reversal of 10140491645 is 54619404101.

It is a happy number.

10140491645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54619404101 = 19 ⋅2874705479.

It can be written as a sum of positive squares in 2 ways, for example, as 2644222084 + 7496269561 = 51422^2 + 86581^2 .

It is a cyclic number.

It is not a de Polignac number, because 10140491645 - 2⁴ = 10140491629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014049160 + ... + 1014049169.

It is an arithmetic number, because the mean of its divisors is an integer number (3042147495).

Almost surely, 2^10140491645 is an apocalyptic number.

It is an amenable number.

10140491645 is a deficient number, since it is larger than the sum of its proper divisors (2028098335).

10140491645 is an equidigital number, since it uses as much as digits as its factorization.

10140491645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028098334.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 10140491645 its reverse (54619404101), we get a palindrome (64759895746).

The spelling of 10140491645 in words is "ten billion, one hundred forty million, four hundred ninety-one thousand, six hundred forty-five".