78055000381 has 4 divisors (see below), whose sum is σ = 79870232992. Its totient is φ = 76239767772.

The previous prime is 78055000367. The next prime is 78055000403. The reversal of 78055000381 is 18300055087.

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.

It is a cyclic number.

It is not a de Polignac number, because 78055000381 - 2⁵ = 78055000349 is a prime.

It is a super-2 number, since 2×78055000381² (a number of 23 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 78055000381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78055000301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907616241 + ... + 907616326.

It is an arithmetic number, because the mean of its divisors is an integer number (19967558248).

Almost surely, 2^78055000381 is an apocalyptic number.

It is an amenable number.

78055000381 is a deficient number, since it is larger than the sum of its proper divisors (1815232611).

78055000381 is a wasteful number, since it uses less digits than its factorization.

78055000381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815232610.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 78055000381 in words is "seventy-eight billion, fifty-five million, three hundred eighty-one", and thus it is an aban number.