10787761509 has 8 divisors (see below), whose sum is σ = 16438493760. Its totient is φ = 6164435136.

The previous prime is 10787761493. The next prime is 10787761559. The reversal of 10787761509 is 90516778701.

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

It is not a de Polignac number, because 10787761509 - 2⁴ = 10787761493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10787761559) 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, 256851444 + ... + 256851485.

It is an arithmetic number, because the mean of its divisors is an integer number (2054811720).

Almost surely, 2^10787761509 is an apocalyptic number.

It is an amenable number.

10787761509 is a deficient number, since it is larger than the sum of its proper divisors (5650732251).

10787761509 is an equidigital number, since it uses as much as digits as its factorization.

10787761509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513702939.

The product of its (nonzero) digits is 740880, while the sum is 51.

The spelling of 10787761509 in words is "ten billion, seven hundred eighty-seven million, seven hundred sixty-one thousand, five hundred nine".