127729397922 has 16 divisors (see below), whose sum is σ = 291952909632. Its totient is φ = 36494113680.

The previous prime is 127729397897. The next prime is 127729397923. The reversal of 127729397922 is 229793927721.

It is not an unprimeable number, because it can be changed into a prime (127729397923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1520588029 + ... + 1520588112.

It is an arithmetic number, because the mean of its divisors is an integer number (18247056852).

Almost surely, 2^127729397922 is an apocalyptic number.

127729397922 is an abundant number, since it is smaller than the sum of its proper divisors (164223511710).

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

127729397922 is a wasteful number, since it uses less digits than its factorization.

127729397922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041176153.

The product of its digits is 12002256, while the sum is 60.

The spelling of 127729397922 in words is "one hundred twenty-seven billion, seven hundred twenty-nine million, three hundred ninety-seven thousand, nine hundred twenty-two".