15780087273 has 16 divisors (see below), whose sum is σ = 21996933120. Its totient is φ = 10043401104.

The previous prime is 15780087251. The next prime is 15780087331. The reversal of 15780087273 is 37278008751.

It is not a de Polignac number, because 15780087273 - 2⁵ = 15780087241 is a prime.

It is a super-2 number, since 2×15780087273² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15780083273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182553 + ... + 254726.

It is an arithmetic number, because the mean of its divisors is an integer number (1374808320).

Almost surely, 2^15780087273 is an apocalyptic number.

It is an amenable number.

15780087273 is a deficient number, since it is larger than the sum of its proper divisors (6216845847).

15780087273 is a wasteful number, since it uses less digits than its factorization.

15780087273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437828.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 15780087273 in words is "fifteen billion, seven hundred eighty million, eighty-seven thousand, two hundred seventy-three".