129216306770460 has 144 divisors (see below), whose sum is σ = 482407545337536. Its totient is φ = 27263220765696.

The previous prime is 129216306770437. The next prime is 129216306770461. The reversal of 129216306770460 is 64077603612921.

129216306770460 is a `hidden beast` number, since 1 + 2 + 9 + 21 + 6 + 30 + 67 + 70 + 460 = 666.

It is a super-2 number, since 2×129216306770460² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129216306770397 and 129216306770406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129216306770461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3944315329 + ... + 3944348088.

Almost surely, 2^{129216306770460} is an apocalyptic number.

129216306770460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129216306770460 is an abundant number, since it is smaller than the sum of its proper divisors (353191238567076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129216306770460 is a wasteful number, since it uses less digits than its factorization.

129216306770460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888663452 (or 7888663447 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 129216306770460 in words is "one hundred twenty-nine trillion, two hundred sixteen billion, three hundred six million, seven hundred seventy thousand, four hundred sixty".