1045656238791 has 8 divisors (see below), whose sum is σ = 1407238303104. Its totient is φ = 690589166840.

The previous prime is 1045656238787. The next prime is 1045656238793. The reversal of 1045656238791 is 1978326565401.

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 1045656238791 - 2² = 1045656238787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045656238793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1628747715 + ... + 1628748356.

It is an arithmetic number, because the mean of its divisors is an integer number (175904787888).

It is a 1-persistent number, because it is pandigital, but 2⋅1045656238791 = 2091312477582 is not.

Almost surely, 2^{1045656238791} is an apocalyptic number.

1045656238791 is a deficient number, since it is larger than the sum of its proper divisors (361582064313).

1045656238791 is a wasteful number, since it uses less digits than its factorization.

1045656238791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257496181.

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 1045656238791 in words is "one trillion, forty-five billion, six hundred fifty-six million, two hundred thirty-eight thousand, seven hundred ninety-one".