15980775019 has 8 divisors (see below), whose sum is σ = 17566655040. Its totient is φ = 14417075400.

The previous prime is 15980775007. The next prime is 15980775049. The reversal of 15980775019 is 91057708951.

It is a happy number.

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 15980775019 - 2²¹ = 15978677867 is a prime.

It is a super-2 number, since 2×15980775019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15980775049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5543589 + ... + 5546470.

It is an arithmetic number, because the mean of its divisors is an integer number (2195831880).

Almost surely, 2^15980775019 is an apocalyptic number.

15980775019 is a deficient number, since it is larger than the sum of its proper divisors (1585880021).

15980775019 is a wasteful number, since it uses less digits than its factorization.

15980775019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11090201.

The product of its (nonzero) digits is 793800, while the sum is 52.

The spelling of 15980775019 in words is "fifteen billion, nine hundred eighty million, seven hundred seventy-five thousand, nineteen".