129422501481 has 32 divisors (see below), whose sum is σ = 212406492928. Its totient is φ = 68260112640.

The previous prime is 129422501473. The next prime is 129422501497. The reversal of 129422501481 is 184105224921.

It is not a de Polignac number, because 129422501481 - 2³ = 129422501473 is a prime.

It is a super-2 number, since 2×129422501481² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129422501081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4095915 + ... + 4127391.

It is an arithmetic number, because the mean of its divisors is an integer number (6637702904).

Almost surely, 2^129422501481 is an apocalyptic number.

It is an amenable number.

129422501481 is a deficient number, since it is larger than the sum of its proper divisors (82983991447).

129422501481 is a wasteful number, since it uses less digits than its factorization.

129422501481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46561.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 129422501481 in words is "one hundred twenty-nine billion, four hundred twenty-two million, five hundred one thousand, four hundred eighty-one".