157734457473 has 4 divisors (see below), whose sum is σ = 210312609968. Its totient is φ = 105156304980.

The previous prime is 157734457429. The next prime is 157734457477. The reversal of 157734457473 is 374754437751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 157734457473 - 2¹³ = 157734449281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157734457477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26289076243 + ... + 26289076248.

It is an arithmetic number, because the mean of its divisors is an integer number (52578152492).

Almost surely, 2^157734457473 is an apocalyptic number.

It is an amenable number.

157734457473 is a deficient number, since it is larger than the sum of its proper divisors (52578152495).

157734457473 is an equidigital number, since it uses as much as digits as its factorization.

157734457473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52578152494.

The product of its digits is 34574400, while the sum is 57.

The spelling of 157734457473 in words is "one hundred fifty-seven billion, seven hundred thirty-four million, four hundred fifty-seven thousand, four hundred seventy-three".