157448397999 has 8 divisors (see below), whose sum is σ = 210008644992. Its totient is φ = 104926874840.

The previous prime is 157448397943. The next prime is 157448398057. The reversal of 157448397999 is 999793844751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157448397999 - 2²⁵ = 157414843567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157448397999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157448395999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9671469 + ... + 9687734.

It is an arithmetic number, because the mean of its divisors is an integer number (26251080624).

Almost surely, 2^157448397999 is an apocalyptic number.

157448397999 is a deficient number, since it is larger than the sum of its proper divisors (52560246993).

157448397999 is a wasteful number, since it uses less digits than its factorization.

157448397999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19361917.

The product of its digits is 617258880, while the sum is 75.

The spelling of 157448397999 in words is "one hundred fifty-seven billion, four hundred forty-eight million, three hundred ninety-seven thousand, nine hundred ninety-nine".