1438623506077 has 8 divisors (see below), whose sum is σ = 1476936655992. Its totient is φ = 1400463916800.

The previous prime is 1438623506059. The next prime is 1438623506123. The reversal of 1438623506077 is 7706053268341.

It can be written as a sum of positive squares in 4 ways, for example, as 80137683396 + 1358485822681 = 283086^2 + 1165541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438623506077 is a prime.

It is a super-3 number, since 3×1438623506077³ (a number of 37 digits) contains 333 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 (1438623506377) 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 7 ways as a sum of consecutive naturals, for example, 38371174 + ... + 38408647.

It is an arithmetic number, because the mean of its divisors is an integer number (184617081999).

Almost surely, 2^{1438623506077} is an apocalyptic number.

It is an amenable number.

1438623506077 is a deficient number, since it is larger than the sum of its proper divisors (38313149915).

1438623506077 is an equidigital number, since it uses as much as digits as its factorization.

1438623506077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76780319.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 1438623506077 in words is "one trillion, four hundred thirty-eight billion, six hundred twenty-three million, five hundred six thousand, seventy-seven".