380427708681 has 6 divisors (see below), whose sum is σ = 549506690330. Its totient is φ = 253618472448.

The previous prime is 380427708643. The next prime is 380427708691. The reversal of 380427708681 is 186807724083.

It is a happy number.

380427708681 is a `hidden beast` number, since 380 + 42 + 7 + 70 + 86 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 372490502400 + 7937206281 = 610320^2 + 89091^2 .

It is not a de Polignac number, because 380427708681 - 2⁷ = 380427708553 is a prime.

It is a super-2 number, since 2×380427708681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (380427708691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21134872696 + ... + 21134872713.

Almost surely, 2^380427708681 is an apocalyptic number.

It is an amenable number.

380427708681 is a deficient number, since it is larger than the sum of its proper divisors (169078981649).

380427708681 is a wasteful number, since it uses less digits than its factorization.

380427708681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42269745415 (or 42269745412 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 380427708681 in words is "three hundred eighty billion, four hundred twenty-seven million, seven hundred eight thousand, six hundred eighty-one".