157628399451 has 16 divisors (see below), whose sum is σ = 214658688000. Its totient is φ = 102842183808.

The previous prime is 157628399419. The next prime is 157628399459. The reversal of 157628399451 is 154993826751.

It is a happy number.

It is not a de Polignac number, because 157628399451 - 2⁵ = 157628399419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157628399459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2398275 + ... + 2463123.

It is an arithmetic number, because the mean of its divisors is an integer number (13416168000).

Almost surely, 2^157628399451 is an apocalyptic number.

157628399451 is a deficient number, since it is larger than the sum of its proper divisors (57030288549).

157628399451 is a wasteful number, since it uses less digits than its factorization.

157628399451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82138.

The product of its digits is 16329600, while the sum is 60.

The spelling of 157628399451 in words is "one hundred fifty-seven billion, six hundred twenty-eight million, three hundred ninety-nine thousand, four hundred fifty-one".