1065631440626 has 4 divisors (see below), whose sum is σ = 1598447160942. Its totient is φ = 532815720312.

The previous prime is 1065631440611. The next prime is 1065631440673. The reversal of 1065631440626 is 6260441365601.

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

It can be written as a sum of positive squares in only one way, i.e., 1012641702601 + 52989738025 = 1006301^2 + 230195^2 .

It is a super-2 number, since 2×1065631440626² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266407860155 + ... + 266407860158.

Almost surely, 2^{1065631440626} is an apocalyptic number.

1065631440626 is a deficient number, since it is larger than the sum of its proper divisors (532815720316).

1065631440626 is an equidigital number, since it uses as much as digits as its factorization.

1065631440626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532815720315.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 1065631440626 in words is "one trillion, sixty-five billion, six hundred thirty-one million, four hundred forty thousand, six hundred twenty-six".