157634451215 has 4 divisors (see below), whose sum is σ = 189161341464. Its totient is φ = 126107560968.

The previous prime is 157634451137. The next prime is 157634451223. The reversal of 157634451215 is 512154436751.

It is a happy number.

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 157634451215 - 2¹⁴ = 157634434831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 15763445117 + ... + 15763445126.

It is an arithmetic number, because the mean of its divisors is an integer number (47290335366).

Almost surely, 2^157634451215 is an apocalyptic number.

157634451215 is a deficient number, since it is larger than the sum of its proper divisors (31526890249).

157634451215 is an equidigital number, since it uses as much as digits as its factorization.

157634451215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31526890248.

The product of its digits is 504000, while the sum is 44.

Adding to 157634451215 its reverse (512154436751), we get a palindrome (669788887966).

The spelling of 157634451215 in words is "one hundred fifty-seven billion, six hundred thirty-four million, four hundred fifty-one thousand, two hundred fifteen".