354945732381 has 24 divisors (see below), whose sum is σ = 541436366016. Its totient is φ = 223615180800.

The previous prime is 354945732367. The next prime is 354945732389. The reversal of 354945732381 is 183237549453.

354945732381 is a `hidden beast` number, since 3 + 5 + 49 + 4 + 573 + 23 + 8 + 1 = 666.

It is not a de Polignac number, because 354945732381 - 2¹¹ = 354945730333 is a prime.

It is a super-2 number, since 2×354945732381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354945732389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10312420 + ... + 10346781.

It is an arithmetic number, because the mean of its divisors is an integer number (22559848584).

Almost surely, 2^354945732381 is an apocalyptic number.

It is an amenable number.

354945732381 is a deficient number, since it is larger than the sum of its proper divisors (186490633635).

354945732381 is a wasteful number, since it uses less digits than its factorization.

354945732381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20659313 (or 20659310 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The spelling of 354945732381 in words is "three hundred fifty-four billion, nine hundred forty-five million, seven hundred thirty-two thousand, three hundred eighty-one".