315545086757 has 4 divisors (see below), whose sum is σ = 319090537260. Its totient is φ = 311999636256.

The previous prime is 315545086709. The next prime is 315545086763. The reversal of 315545086757 is 757680545513.

It is a Cunningham number, because it is equal to 561734²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 757680545513 = 18143 ⋅41761591.

It can be written as a sum of positive squares in 2 ways, for example, as 60591791716 + 254953295041 = 246154^2 + 504929^2 .

It is a cyclic number.

It is not a de Polignac number, because 315545086757 - 2¹⁶ = 315545021221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315545086357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1772725118 + ... + 1772725295.

It is an arithmetic number, because the mean of its divisors is an integer number (79772634315).

Almost surely, 2^315545086757 is an apocalyptic number.

It is an amenable number.

315545086757 is a deficient number, since it is larger than the sum of its proper divisors (3545450503).

315545086757 is an equidigital number, since it uses as much as digits as its factorization.

315545086757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545450502.

The product of its (nonzero) digits is 17640000, while the sum is 56.

The spelling of 315545086757 in words is "three hundred fifteen billion, five hundred forty-five million, eighty-six thousand, seven hundred fifty-seven".