10315551509 has 4 divisors (see below), whose sum is σ = 10315805760. Its totient is φ = 10315297260.

The previous prime is 10315551487. The next prime is 10315551511. The reversal of 10315551509 is 90515551301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10315551509 - 2¹² = 10315547413 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 (10315551569) 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, 51119 + ... + 152460.

It is an arithmetic number, because the mean of its divisors is an integer number (2578951440).

Almost surely, 2^10315551509 is an apocalyptic number.

It is an amenable number.

10315551509 is a deficient number, since it is larger than the sum of its proper divisors (254251).

10315551509 is an equidigital number, since it uses as much as digits as its factorization.

10315551509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254250.

The product of its (nonzero) digits is 16875, while the sum is 35.

The spelling of 10315551509 in words is "ten billion, three hundred fifteen million, five hundred fifty-one thousand, five hundred nine".