127153773772561 has 32 divisors (see below), whose sum is σ = 134182414080000. Its totient is φ = 120326620115520.

The previous prime is 127153773772549. The next prime is 127153773772601. The reversal of 127153773772561 is 165277377351721.

It is a cyclic number.

It is not a de Polignac number, because 127153773772561 - 2¹⁹ = 127153773248273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127153773772493 and 127153773772502.

It is not an unprimeable number, because it can be changed into a prime (127153773742561) 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, 233889310 + ... + 234432328.

It is an arithmetic number, because the mean of its divisors is an integer number (4193200440000).

Almost surely, 2^{127153773772561} is an apocalyptic number.

It is an amenable number.

127153773772561 is a deficient number, since it is larger than the sum of its proper divisors (7028640307439).

127153773772561 is a wasteful number, since it uses less digits than its factorization.

127153773772561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543877.

The product of its digits is 90757800, while the sum is 64.

The spelling of 127153773772561 in words is "one hundred twenty-seven trillion, one hundred fifty-three billion, seven hundred seventy-three million, seven hundred seventy-two thousand, five hundred sixty-one".