157505782663 has 4 divisors (see below), whose sum is σ = 166770828720. Its totient is φ = 148240736608.

The previous prime is 157505782657. The next prime is 157505782673. The reversal of 157505782663 is 366287505751.

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

It is a cyclic number.

It is not a de Polignac number, because 157505782663 - 2¹³ = 157505774471 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 (157505782673) 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, 4632523003 + ... + 4632523036.

It is an arithmetic number, because the mean of its divisors is an integer number (41692707180).

Almost surely, 2^157505782663 is an apocalyptic number.

157505782663 is a deficient number, since it is larger than the sum of its proper divisors (9265046057).

157505782663 is an equidigital number, since it uses as much as digits as its factorization.

157505782663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9265046056.

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 157505782663 in words is "one hundred fifty-seven billion, five hundred five million, seven hundred eighty-two thousand, six hundred sixty-three".