381705253051 has 4 divisors (see below), whose sum is σ = 383302346400. Its totient is φ = 380108159704.

The previous prime is 381705253001. The next prime is 381705253073. The reversal of 381705253051 is 150352507183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381705253051 - 2²⁹ = 381168382139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381705252995 and 381705253013.

It is not an unprimeable number, because it can be changed into a prime (381705253001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798546316 + ... + 798546793.

It is an arithmetic number, because the mean of its divisors is an integer number (95825586600).

Almost surely, 2^381705253051 is an apocalyptic number.

381705253051 is a deficient number, since it is larger than the sum of its proper divisors (1597093349).

381705253051 is a wasteful number, since it uses less digits than its factorization.

381705253051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597093348.

The product of its (nonzero) digits is 126000, while the sum is 40.

The spelling of 381705253051 in words is "three hundred eighty-one billion, seven hundred five million, two hundred fifty-three thousand, fifty-one".