381549079457 has 32 divisors (see below), whose sum is σ = 477535027200. Its totient is φ = 296815192128.

The previous prime is 381549079421. The next prime is 381549079477. The reversal of 381549079457 is 754970945183.

It is not a de Polignac number, because 381549079457 - 2¹⁴ = 381549063073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381549079457.

It is not an unprimeable number, because it can be changed into a prime (381549079477) 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 31 ways as a sum of consecutive naturals, for example, 1607138 + ... + 1829204.

It is an arithmetic number, because the mean of its divisors is an integer number (14922969600).

Almost surely, 2^381549079457 is an apocalyptic number.

It is an amenable number.

381549079457 is a deficient number, since it is larger than the sum of its proper divisors (95985947743).

381549079457 is a wasteful number, since it uses less digits than its factorization.

381549079457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222405.

The product of its (nonzero) digits is 38102400, while the sum is 62.

The spelling of 381549079457 in words is "three hundred eighty-one billion, five hundred forty-nine million, seventy-nine thousand, four hundred fifty-seven".