515465545441 has 48 divisors (see below), whose sum is σ = 697597427520. Its totient is φ = 375313720320.

The previous prime is 515465545421. The next prime is 515465545487. The reversal of 515465545441 is 144545564515.

It is a de Polignac number, because none of the positive numbers 2^k-515465545441 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (515465545421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1071301 + ... + 1476013.

It is an arithmetic number, because the mean of its divisors is an integer number (14533279740).

Almost surely, 2^515465545441 is an apocalyptic number.

It is an amenable number.

515465545441 is a deficient number, since it is larger than the sum of its proper divisors (182131882079).

515465545441 is a wasteful number, since it uses less digits than its factorization.

515465545441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404894 (or 404887 counting only the distinct ones).

The product of its digits is 4800000, while the sum is 49.

The spelling of 515465545441 in words is "five hundred fifteen billion, four hundred sixty-five million, five hundred forty-five thousand, four hundred forty-one".