15161816642 has 16 divisors (see below), whose sum is σ = 26075267712. Its totient is φ = 6477025920.

The previous prime is 15161816633. The next prime is 15161816653. The reversal of 15161816642 is 24661816151.

It is a super-3 number, since 3×15161816642³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15161816642.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1736783 + ... + 1745490.

It is an arithmetic number, because the mean of its divisors is an integer number (1629704232).

Almost surely, 2^15161816642 is an apocalyptic number.

15161816642 is a deficient number, since it is larger than the sum of its proper divisors (10913451070).

15161816642 is a wasteful number, since it uses less digits than its factorization.

15161816642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482593.

The product of its digits is 69120, while the sum is 41.

The spelling of 15161816642 in words is "fifteen billion, one hundred sixty-one million, eight hundred sixteen thousand, six hundred forty-two".