663520152457 has 4 divisors (see below), whose sum is σ = 664650511056. Its totient is φ = 662389793860.

The previous prime is 663520152439. The next prime is 663520152469. The reversal of 663520152457 is 754251025366.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663520152457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663520152437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565178419 + ... + 565179592.

It is an arithmetic number, because the mean of its divisors is an integer number (166162627764).

Almost surely, 2^663520152457 is an apocalyptic number.

It is an amenable number.

663520152457 is a deficient number, since it is larger than the sum of its proper divisors (1130358599).

663520152457 is a wasteful number, since it uses less digits than its factorization.

663520152457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130358598.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 663520152457 in words is "six hundred sixty-three billion, five hundred twenty million, one hundred fifty-two thousand, four hundred fifty-seven".