129782232515 has 16 divisors (see below), whose sum is σ = 168998882976. Its totient is φ = 95107584000.

The previous prime is 129782232511. The next prime is 129782232533. The reversal of 129782232515 is 515232287921.

It is not a de Polignac number, because 129782232515 - 2² = 129782232511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129782232515.

It is not an unprimeable number, because it can be changed into a prime (129782232511) 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, 7612286 + ... + 7629315.

It is an arithmetic number, because the mean of its divisors is an integer number (10562430186).

Almost surely, 2^129782232515 is an apocalyptic number.

129782232515 is a deficient number, since it is larger than the sum of its proper divisors (39216650461).

129782232515 is a wasteful number, since it uses less digits than its factorization.

129782232515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15241750.

The product of its digits is 604800, while the sum is 47.

The spelling of 129782232515 in words is "one hundred twenty-nine billion, seven hundred eighty-two million, two hundred thirty-two thousand, five hundred fifteen".