1018277373647 has 4 divisors (see below), whose sum is σ = 1062550302960. Its totient is φ = 974004444336.

The previous prime is 1018277373637. The next prime is 1018277373671. The reversal of 1018277373647 is 7463737728101.

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 1018277373647 - 2¹⁸ = 1018277111503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1018277373592 and 1018277373601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018277373637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22136464622 + ... + 22136464667.

It is an arithmetic number, because the mean of its divisors is an integer number (265637575740).

Almost surely, 2^{1018277373647} is an apocalyptic number.

1018277373647 is a deficient number, since it is larger than the sum of its proper divisors (44272929313).

1018277373647 is an equidigital number, since it uses as much as digits as its factorization.

1018277373647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44272929312.

The product of its (nonzero) digits is 8297856, while the sum is 56.

The spelling of 1018277373647 in words is "one trillion, eighteen billion, two hundred seventy-seven million, three hundred seventy-three thousand, six hundred forty-seven".