1000748777487 has 4 divisors (see below), whose sum is σ = 1334331703320. Its totient is φ = 667165851656.

The previous prime is 1000748777473. The next prime is 1000748777503. The reversal of 1000748777487 is 7847778470001.

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 1000748777487 - 2¹² = 1000748773391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000748777487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000748737487) 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, 166791462912 + ... + 166791462917.

It is an arithmetic number, because the mean of its divisors is an integer number (333582925830).

Almost surely, 2^{1000748777487} is an apocalyptic number.

1000748777487 is a deficient number, since it is larger than the sum of its proper divisors (333582925833).

1000748777487 is an equidigital number, since it uses as much as digits as its factorization.

1000748777487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333582925832.

The product of its (nonzero) digits is 17210368, while the sum is 60.

The spelling of 1000748777487 in words is "one trillion, seven hundred forty-eight million, seven hundred seventy-seven thousand, four hundred eighty-seven".