127621126505213 has 32 divisors (see below), whose sum is σ = 142128788327424. Its totient is φ = 113620404240000.

The previous prime is 127621126505183. The next prime is 127621126505227. The reversal of 127621126505213 is 312505621126721.

It is a cyclic number.

It is not a de Polignac number, because 127621126505213 - 2¹⁴ = 127621126488829 is a prime.

It is a super-2 number, since 2×127621126505213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127621126505273) 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, 230268953 + ... + 230822513.

It is an arithmetic number, because the mean of its divisors is an integer number (4441524635232).

Almost surely, 2^{127621126505213} is an apocalyptic number.

It is an amenable number.

127621126505213 is a deficient number, since it is larger than the sum of its proper divisors (14507661822211).

127621126505213 is a wasteful number, since it uses less digits than its factorization.

127621126505213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555617.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 127621126505213 in words is "one hundred twenty-seven trillion, six hundred twenty-one billion, one hundred twenty-six million, five hundred five thousand, two hundred thirteen".