788732001561 has 8 divisors (see below), whose sum is σ = 1201877335744. Its totient is φ = 450704000880.

The previous prime is 788732001557. The next prime is 788732001599. The reversal of 788732001561 is 165100237887.

It is a happy number.

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

It is not a de Polignac number, because 788732001561 - 2² = 788732001557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 788732001561.

It is not an unprimeable number, because it can be changed into a prime (788732101561) 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, 18779333350 + ... + 18779333391.

It is an arithmetic number, because the mean of its divisors is an integer number (150234666968).

Almost surely, 2^788732001561 is an apocalyptic number.

It is an amenable number.

788732001561 is a deficient number, since it is larger than the sum of its proper divisors (413145334183).

788732001561 is a wasteful number, since it uses less digits than its factorization.

788732001561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37558666751.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 788732001561 in words is "seven hundred eighty-eight billion, seven hundred thirty-two million, one thousand, five hundred sixty-one".