1087778613007 has 4 divisors (see below), whose sum is σ = 1088540897976. Its totient is φ = 1087016328040.

The previous prime is 1087778612989. The next prime is 1087778613041. The reversal of 1087778613007 is 7003168777801.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1087778613007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087778613307) 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, 381140344 + ... + 381143197.

It is an arithmetic number, because the mean of its divisors is an integer number (272135224494).

Almost surely, 2^{1087778613007} is an apocalyptic number.

1087778613007 is a deficient number, since it is larger than the sum of its proper divisors (762284969).

1087778613007 is an equidigital number, since it uses as much as digits as its factorization.

1087778613007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762284968.

The product of its (nonzero) digits is 2765952, while the sum is 55.

The spelling of 1087778613007 in words is "one trillion, eighty-seven billion, seven hundred seventy-eight million, six hundred thirteen thousand, seven".