15442103381 has 2 divisors, whose sum is σ = 15442103382. Its totient is φ = 15442103380.

The previous prime is 15442103363. The next prime is 15442103387. The reversal of 15442103381 is 18330124451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8650860100 + 6791243281 = 93010^2 + 82409^2 .

It is a cyclic number.

It is not a de Polignac number, because 15442103381 - 2⁶ = 15442103317 is a prime.

It is a super-2 number, since 2×15442103381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15442103387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7721051690 + 7721051691.

It is an arithmetic number, because the mean of its divisors is an integer number (7721051691).

Almost surely, 2^15442103381 is an apocalyptic number.

It is an amenable number.

15442103381 is a deficient number, since it is larger than the sum of its proper divisors (1).

15442103381 is an equidigital number, since it uses as much as digits as its factorization.

15442103381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 15442103381 in words is "fifteen billion, four hundred forty-two million, one hundred three thousand, three hundred eighty-one".