157519969187 has 4 divisors (see below), whose sum is σ = 180022821936. Its totient is φ = 135017116440.

The previous prime is 157519969157. The next prime is 157519969241. The reversal of 157519969187 is 781969915751.

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 157519969187 - 2¹² = 157519965091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157519969157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11251426364 + ... + 11251426377.

It is an arithmetic number, because the mean of its divisors is an integer number (45005705484).

Almost surely, 2^157519969187 is an apocalyptic number.

157519969187 is a deficient number, since it is larger than the sum of its proper divisors (22502852749).

157519969187 is an equidigital number, since it uses as much as digits as its factorization.

157519969187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22502852748.

The product of its digits is 42865200, while the sum is 68.

The spelling of 157519969187 in words is "one hundred fifty-seven billion, five hundred nineteen million, nine hundred sixty-nine thousand, one hundred eighty-seven".