15920450793 has 12 divisors (see below), whose sum is σ = 24765145860. Its totient is φ = 9797200416.

The previous prime is 15920450783. The next prime is 15920450801. The reversal of 15920450793 is 39705402951.

It is a happy number.

15920450793 is a `hidden beast` number, since 1 + 59 + 2 + 0 + 4 + 507 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11019330729 + 4901120064 = 104973^2 + 70008^2 .

It is not a de Polignac number, because 15920450793 - 2¹⁸ = 15920188649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15920450723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68035998 + ... + 68036231.

It is an arithmetic number, because the mean of its divisors is an integer number (2063762155).

Almost surely, 2^15920450793 is an apocalyptic number.

15920450793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15920450793 is a deficient number, since it is larger than the sum of its proper divisors (8844695067).

15920450793 is a wasteful number, since it uses less digits than its factorization.

15920450793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136072248 (or 136072245 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 15920450793 in words is "fifteen billion, nine hundred twenty million, four hundred fifty thousand, seven hundred ninety-three".