15223861073 has 4 divisors (see below), whose sum is σ = 15473432628. Its totient is φ = 14974289520.

The previous prime is 15223860923. The next prime is 15223861087. The reversal of 15223861073 is 37016832251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7711825489 + 7512035584 = 87817^2 + 86672^2 .

It is a cyclic number.

It is not a de Polignac number, because 15223861073 - 2¹⁴ = 15223844689 is a prime.

It is a super-2 number, since 2×15223861073² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15223863073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124785686 + ... + 124785807.

It is an arithmetic number, because the mean of its divisors is an integer number (3868358157).

Almost surely, 2^15223861073 is an apocalyptic number.

It is an amenable number.

15223861073 is a deficient number, since it is larger than the sum of its proper divisors (249571555).

15223861073 is an equidigital number, since it uses as much as digits as its factorization.

15223861073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249571554.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 15223861073 in words is "fifteen billion, two hundred twenty-three million, eight hundred sixty-one thousand, seventy-three".