127793507428 has 12 divisors (see below), whose sum is σ = 223661930940. Its totient is φ = 63890098592.

The previous prime is 127793507399. The next prime is 127793507441. The reversal of 127793507428 is 824705397721.

It can be written as a sum of positive squares in 2 ways, for example, as 116259177024 + 11534330404 = 340968^2 + 107398^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1620451 + ... + 1697482.

It is an arithmetic number, because the mean of its divisors is an integer number (18638494245).

Almost surely, 2^127793507428 is an apocalyptic number.

It is an amenable number.

127793507428 is a deficient number, since it is larger than the sum of its proper divisors (95868423512).

127793507428 is a wasteful number, since it uses less digits than its factorization.

127793507428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327566 (or 3327564 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 127793507428 in words is "one hundred twenty-seven billion, seven hundred ninety-three million, five hundred seven thousand, four hundred twenty-eight".