15780032073 has 96 divisors (see below), whose sum is σ = 26643052800. Its totient is φ = 8919009792.

The previous prime is 15780032069. The next prime is 15780032123. The reversal of 15780032073 is 37023008751.

It is not a de Polignac number, because 15780032073 - 2² = 15780032069 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (15780032003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17870490 + ... + 17871372.

It is an arithmetic number, because the mean of its divisors is an integer number (277531800).

Almost surely, 2^15780032073 is an apocalyptic number.

15780032073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

15780032073 is a deficient number, since it is larger than the sum of its proper divisors (10863020727).

15780032073 is a wasteful number, since it uses less digits than its factorization.

15780032073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The spelling of 15780032073 in words is "fifteen billion, seven hundred eighty million, thirty-two thousand, seventy-three".