381159777373 has 4 divisors (see below), whose sum is σ = 381161036448. Its totient is φ = 381158518300.

The previous prime is 381159777337. The next prime is 381159777379. The reversal of 381159777373 is 373777951183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381159777373 is a prime.

It is a super-2 number, since 2×381159777373² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381159777379) 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, 130098 + ... + 882748.

It is an arithmetic number, because the mean of its divisors is an integer number (95290259112).

Almost surely, 2^381159777373 is an apocalyptic number.

It is an amenable number.

381159777373 is a deficient number, since it is larger than the sum of its proper divisors (1259075).

381159777373 is an equidigital number, since it uses as much as digits as its factorization.

381159777373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259074.

The product of its digits is 23337720, while the sum is 61.

The spelling of 381159777373 in words is "three hundred eighty-one billion, one hundred fifty-nine million, seven hundred seventy-seven thousand, three hundred seventy-three".