15223556662 has 4 divisors (see below), whose sum is σ = 22835334996. Its totient is φ = 7611778330.

The previous prime is 15223556633. The next prime is 15223556669. The reversal of 15223556662 is 26665532251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26665532251 = 43 ⋅620128657.

It is a super-2 number, since 2×15223556662² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15223556669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3805889164 + ... + 3805889167.

It is an arithmetic number, because the mean of its divisors is an integer number (5708833749).

Almost surely, 2^15223556662 is an apocalyptic number.

15223556662 is a deficient number, since it is larger than the sum of its proper divisors (7611778334).

15223556662 is an equidigital number, since it uses as much as digits as its factorization.

15223556662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7611778333.

The product of its digits is 648000, while the sum is 43.

The spelling of 15223556662 in words is "fifteen billion, two hundred twenty-three million, five hundred fifty-six thousand, six hundred sixty-two".