663151431927 has 4 divisors (see below), whose sum is σ = 884201909240. Its totient is φ = 442100954616.

The previous prime is 663151431907. The next prime is 663151431931. The reversal of 663151431927 is 729134151366.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 663151431927 - 2³⁰ = 662077690103 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 (663151431907) 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, 110525238652 + ... + 110525238657.

It is an arithmetic number, because the mean of its divisors is an integer number (221050477310).

Almost surely, 2^663151431927 is an apocalyptic number.

663151431927 is a deficient number, since it is larger than the sum of its proper divisors (221050477313).

663151431927 is a wasteful number, since it uses less digits than its factorization.

663151431927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221050477312.

The product of its digits is 816480, while the sum is 48.

The spelling of 663151431927 in words is "six hundred sixty-three billion, one hundred fifty-one million, four hundred thirty-one thousand, nine hundred twenty-seven".