10640351503 has 4 divisors (see below), whose sum is σ = 10659251448. Its totient is φ = 10621451560.

The previous prime is 10640351473. The next prime is 10640351509. The reversal of 10640351503 is 30515304601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10640351503 - 2¹⁷ = 10640220431 is a prime.

It is a super-2 number, since 2×10640351503² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640351509) 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, 9449128 + ... + 9450253.

It is an arithmetic number, because the mean of its divisors is an integer number (2664812862).

Almost surely, 2^10640351503 is an apocalyptic number.

10640351503 is a deficient number, since it is larger than the sum of its proper divisors (18899945).

10640351503 is an equidigital number, since it uses as much as digits as its factorization.

10640351503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18899944.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 10640351503 in words is "ten billion, six hundred forty million, three hundred fifty-one thousand, five hundred three".