381330722767 has 4 divisors (see below), whose sum is σ = 393631713856. Its totient is φ = 369029731680.

The previous prime is 381330722761. The next prime is 381330722777. The reversal of 381330722767 is 767227033183.

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 381330722767 - 2¹⁹ = 381330198479 is a prime.

It is a super-2 number, since 2×381330722767² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381330722767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381330722761) 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, 6150495498 + ... + 6150495559.

It is an arithmetic number, because the mean of its divisors is an integer number (98407928464).

Almost surely, 2^381330722767 is an apocalyptic number.

381330722767 is a deficient number, since it is larger than the sum of its proper divisors (12300991089).

381330722767 is a wasteful number, since it uses less digits than its factorization.

381330722767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12300991088.

The product of its (nonzero) digits is 1778112, while the sum is 49.

The spelling of 381330722767 in words is "three hundred eighty-one billion, three hundred thirty million, seven hundred twenty-two thousand, seven hundred sixty-seven".