381275520351 has 16 divisors (see below), whose sum is σ = 578694862080. Its totient is φ = 221029286720.

The previous prime is 381275520347. The next prime is 381275520371. The reversal of 381275520351 is 153025572183.

It is not a de Polignac number, because 381275520351 - 2² = 381275520347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381275520371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251168886 + ... + 251170403.

It is an arithmetic number, because the mean of its divisors is an integer number (36168428880).

Almost surely, 2^381275520351 is an apocalyptic number.

381275520351 is a deficient number, since it is larger than the sum of its proper divisors (197419341729).

381275520351 is a wasteful number, since it uses less digits than its factorization.

381275520351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502339326.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 381275520351 in words is "three hundred eighty-one billion, two hundred seventy-five million, five hundred twenty thousand, three hundred fifty-one".