15554250361193 has 2 divisors, whose sum is σ = 15554250361194. Its totient is φ = 15554250361192.

The previous prime is 15554250361157. The next prime is 15554250361213. The reversal of 15554250361193 is 39116305245551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13551255527209 + 2002994833984 = 3681203^2 + 1415272^2 .

It is a cyclic number.

It is not a de Polignac number, because 15554250361193 - 2¹⁰ = 15554250360169 is a prime.

It is not a weakly prime, because it can be changed into another prime (15554250351193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7777125180596 + 7777125180597.

It is an arithmetic number, because the mean of its divisors is an integer number (7777125180597).

Almost surely, 2^{15554250361193} is an apocalyptic number.

It is an amenable number.

15554250361193 is a deficient number, since it is larger than the sum of its proper divisors (1).

15554250361193 is an equidigital number, since it uses as much as digits as its factorization.

15554250361193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430000, while the sum is 50.

The spelling of 15554250361193 in words is "fifteen trillion, five hundred fifty-four billion, two hundred fifty million, three hundred sixty-one thousand, one hundred ninety-three".