1016644772431 has 4 divisors (see below), whose sum is σ = 1016679368664. Its totient is φ = 1016610176200.

The previous prime is 1016644772413. The next prime is 1016644772503. The reversal of 1016644772431 is 1342774466101.

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 1016644772431 - 2¹⁹ = 1016644248143 is a prime.

It is a super-2 number, since 2×1016644772431² (a number of 25 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 (1016644779431) 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, 17254000 + ... + 17312821.

It is an arithmetic number, because the mean of its divisors is an integer number (254169842166).

Almost surely, 2^{1016644772431} is an apocalyptic number.

1016644772431 is a deficient number, since it is larger than the sum of its proper divisors (34596233).

1016644772431 is an equidigital number, since it uses as much as digits as its factorization.

1016644772431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34596232.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 1016644772431 in words is "one trillion, sixteen billion, six hundred forty-four million, seven hundred seventy-two thousand, four hundred thirty-one".