157229253378 has 54 divisors (see below), whose sum is σ = 359609806179. Its totient is φ = 49641249384.

The previous prime is 157229253373. The next prime is 157229253403. The reversal of 157229253378 is 873352922751.

157229253378 is a `hidden beast` number, since 15 + 7 + 2 + 2 + 9 + 253 + 378 = 666.

It can be written as a sum of positive squares in only one way, i.e., 78614626689 + 78614626689 = 280383^2 + 280383^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=280383.

It is not an unprimeable number, because it can be changed into a prime (157229253373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 31961203 + ... + 31966121.

Almost surely, 2^157229253378 is an apocalyptic number.

157229253378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157229253378

157229253378 is an abundant number, since it is smaller than the sum of its proper divisors (202380552801).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157229253378 is an frugal number, since it uses more digits than its factorization.

157229253378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9884 (or 4943 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 157229253378 in words is "one hundred fifty-seven billion, two hundred twenty-nine million, two hundred fifty-three thousand, three hundred seventy-eight".