15109805975293 has 2 divisors, whose sum is σ = 15109805975294. Its totient is φ = 15109805975292.

The previous prime is 15109805975233. The next prime is 15109805975321. The reversal of 15109805975293 is 39257950890151.

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., 10878565203289 + 4231240772004 = 3298267^2 + 2056998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15109805975293 is a prime.

It is a super-2 number, since 2×15109805975293² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15109805975233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7554902987646 + 7554902987647.

It is an arithmetic number, because the mean of its divisors is an integer number (7554902987647).

Almost surely, 2^{15109805975293} is an apocalyptic number.

It is an amenable number.

15109805975293 is a deficient number, since it is larger than the sum of its proper divisors (1).

15109805975293 is an equidigital number, since it uses as much as digits as its factorization.

15109805975293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618000, while the sum is 64.

The spelling of 15109805975293 in words is "fifteen trillion, one hundred nine billion, eight hundred five million, nine hundred seventy-five thousand, two hundred ninety-three".