381451356121 has 8 divisors (see below), whose sum is σ = 418284861984. Its totient is φ = 344977201920.

The previous prime is 381451356113. The next prime is 381451356149. The reversal of 381451356121 is 121653154183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381451356121 - 2³ = 381451356113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381451356151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89835691 + ... + 89839936.

It is an arithmetic number, because the mean of its divisors is an integer number (52285607748).

Almost surely, 2^381451356121 is an apocalyptic number.

It is an amenable number.

381451356121 is a deficient number, since it is larger than the sum of its proper divisors (36833505863).

381451356121 is a wasteful number, since it uses less digits than its factorization.

381451356121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179675831.

The product of its digits is 86400, while the sum is 40.

The spelling of 381451356121 in words is "three hundred eighty-one billion, four hundred fifty-one million, three hundred fifty-six thousand, one hundred twenty-one".