15972049801 has 8 divisors (see below), whose sum is σ = 16221397824. Its totient is φ = 15723024240.

The previous prime is 15972049799. The next prime is 15972049813. The reversal of 15972049801 is 10894027951.

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

It is a cyclic number.

It is not a de Polignac number, because 15972049801 - 2¹ = 15972049799 is a prime.

It is a super-3 number, since 3×15972049801³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15972049871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20196 + ... + 179866.

It is an arithmetic number, because the mean of its divisors is an integer number (2027674728).

Almost surely, 2^15972049801 is an apocalyptic number.

It is an amenable number.

15972049801 is a deficient number, since it is larger than the sum of its proper divisors (249348023).

15972049801 is a wasteful number, since it uses less digits than its factorization.

15972049801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161231.

The product of its (nonzero) digits is 181440, while the sum is 46.

The spelling of 15972049801 in words is "fifteen billion, nine hundred seventy-two million, forty-nine thousand, eight hundred one".