15445352240077 has 2 divisors, whose sum is σ = 15445352240078. Its totient is φ = 15445352240076.

The previous prime is 15445352239997. The next prime is 15445352240093. The reversal of 15445352240077 is 77004225354451.

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., 15137126297316 + 308225942761 = 3890646^2 + 555181^2 .

It is an emirp because it is prime and its reverse (77004225354451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15445352240077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15445352240077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15445352240377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7722676120038 + 7722676120039.

It is an arithmetic number, because the mean of its divisors is an integer number (7722676120039).

Almost surely, 2^{15445352240077} is an apocalyptic number.

It is an amenable number.

15445352240077 is a deficient number, since it is larger than the sum of its proper divisors (1).

15445352240077 is an equidigital number, since it uses as much as digits as its factorization.

15445352240077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704000, while the sum is 49.

The spelling of 15445352240077 in words is "fifteen trillion, four hundred forty-five billion, three hundred fifty-two million, two hundred forty thousand, seventy-seven".