129782944516 has 81 divisors (see below), whose sum is σ = 239911117383. Its totient is φ = 61430512080.

The previous prime is 129782944493. The next prime is 129782944519. The reversal of 129782944516 is 615449287921.

The square root of 129782944516 is 360254.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×129782944516² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129782944519) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1827928761 + ... + 1827928831.

Almost surely, 2^129782944516 is an apocalyptic number.

129782944516 is the 360254-th square number.

It is an amenable number.

129782944516 is a deficient number, since it is larger than the sum of its proper divisors (110128172867).

129782944516 is an frugal number, since it uses more digits than its factorization.

129782944516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 175 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The spelling of 129782944516 in words is "one hundred twenty-nine billion, seven hundred eighty-two million, nine hundred forty-four thousand, five hundred sixteen".