1534321978103 has 2 divisors, whose sum is σ = 1534321978104. Its totient is φ = 1534321978102.

The previous prime is 1534321978039. The next prime is 1534321978141. The reversal of 1534321978103 is 3018791234351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1534321978103 - 2⁶ = 1534321978039 is a prime.

It is a super-2 number, since 2×1534321978103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534321971103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767160989051 + 767160989052.

It is an arithmetic number, because the mean of its divisors is an integer number (767160989052).

Almost surely, 2^{1534321978103} is an apocalyptic number.

1534321978103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534321978103 is an equidigital number, since it uses as much as digits as its factorization.

1534321978103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 1534321978103 in words is "one trillion, five hundred thirty-four billion, three hundred twenty-one million, nine hundred seventy-eight thousand, one hundred three".