1087644671947 has 8 divisors (see below), whose sum is σ = 1091326067216. Its totient is φ = 1083964177152.

The previous prime is 1087644671929. The next prime is 1087644672011. The reversal of 1087644671947 is 7491764467801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1087644671947 - 2⁷ = 1087644671819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087644675947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240263 + ... + 2682175.

It is an arithmetic number, because the mean of its divisors is an integer number (136415758402).

Almost surely, 2^{1087644671947} is an apocalyptic number.

1087644671947 is a deficient number, since it is larger than the sum of its proper divisors (3681395269).

1087644671947 is an equidigital number, since it uses as much as digits as its factorization.

1087644671947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450237.

The product of its (nonzero) digits is 56899584, while the sum is 64.

The spelling of 1087644671947 in words is "one trillion, eighty-seven billion, six hundred forty-four million, six hundred seventy-one thousand, nine hundred forty-seven".