15530102381 has 2 divisors, whose sum is σ = 15530102382. Its totient is φ = 15530102380.

The previous prime is 15530102317. The next prime is 15530102383. The reversal of 15530102381 is 18320103551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14016192100 + 1513910281 = 118390^2 + 38909^2 .

It is a cyclic number.

It is not a de Polignac number, because 15530102381 - 2⁶ = 15530102317 is a prime.

It is a super-2 number, since 2×15530102381² (a number of 21 digits) contains 22 as substring.

Together with 15530102383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15530102383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7765051190 + 7765051191.

It is an arithmetic number, because the mean of its divisors is an integer number (7765051191).

Almost surely, 2^15530102381 is an apocalyptic number.

It is an amenable number.

15530102381 is a deficient number, since it is larger than the sum of its proper divisors (1).

15530102381 is an equidigital number, since it uses as much as digits as its factorization.

15530102381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 15530102381 in words is "fifteen billion, five hundred thirty million, one hundred two thousand, three hundred eighty-one".