1074987417791 has 4 divisors (see below), whose sum is σ = 1228557048912. Its totient is φ = 921417786672.

The previous prime is 1074987417743. The next prime is 1074987417797. The reversal of 1074987417791 is 1977147894701.

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-1074987417791 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 (1074987417797) 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, 76784815550 + ... + 76784815563.

It is an arithmetic number, because the mean of its divisors is an integer number (307139262228).

Almost surely, 2^{1074987417791} is an apocalyptic number.

1074987417791 is a deficient number, since it is larger than the sum of its proper divisors (153569631121).

1074987417791 is an equidigital number, since it uses as much as digits as its factorization.

1074987417791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153569631120.

The product of its (nonzero) digits is 24893568, while the sum is 65.

Adding to 1074987417791 its sum of digits (65), we get a square (1074987417856 = 1036816²).

The spelling of 1074987417791 in words is "one trillion, seventy-four billion, nine hundred eighty-seven million, four hundred seventeen thousand, seven hundred ninety-one".