127339021656 has 384 divisors, whose sum is σ = 452934144000. Its totient is φ = 32006016000.

The previous prime is 127339021609. The next prime is 127339021673. The reversal of 127339021656 is 656120933721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8413776 + ... + 8428896.

It is an arithmetic number, because the mean of its divisors is an integer number (1179516000).

Almost surely, 2^127339021656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127339021656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226467072000).

127339021656 is an abundant number, since it is smaller than the sum of its proper divisors (325595122344).

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

127339021656 is a wasteful number, since it uses less digits than its factorization.

127339021656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15196 (or 15175 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 127339021656 in words is "one hundred twenty-seven billion, three hundred thirty-nine million, twenty-one thousand, six hundred fifty-six".