127391606779045 has 32 divisors (see below), whose sum is σ = 175885698873600. Its totient is φ = 86765670996480.

The previous prime is 127391606779033. The next prime is 127391606779069. The reversal of 127391606779045 is 540977606193721.

It is not a de Polignac number, because 127391606779045 - 2¹³ = 127391606770853 is a prime.

It is a super-2 number, since 2×127391606779045² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209093710 + ... + 209702080.

It is an arithmetic number, because the mean of its divisors is an integer number (5496428089800).

Almost surely, 2^{127391606779045} is an apocalyptic number.

It is an amenable number.

127391606779045 is a deficient number, since it is larger than the sum of its proper divisors (48494092094555).

127391606779045 is a wasteful number, since it uses less digits than its factorization.

127391606779045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648685.

The product of its (nonzero) digits is 120022560, while the sum is 67.

The spelling of 127391606779045 in words is "one hundred twenty-seven trillion, three hundred ninety-one billion, six hundred six million, seven hundred seventy-nine thousand, forty-five".