128457437074 has 8 divisors (see below), whose sum is σ = 193799948940. Its totient is φ = 63857454096.

The previous prime is 128457437071. The next prime is 128457437077. The reversal of 128457437074 is 470734754821.

It is an interprime number because it is at equal distance from previous prime (128457437071) and next prime (128457437077).

It can be written as a sum of positive squares in 2 ways, for example, as 91079014849 + 37378422225 = 301793^2 + 193335^2 .

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

It is not an unprimeable number, because it can be changed into a prime (128457437071) 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, 185631789 + ... + 185632480.

Almost surely, 2^128457437074 is an apocalyptic number.

128457437074 is a deficient number, since it is larger than the sum of its proper divisors (65342511866).

128457437074 is a wasteful number, since it uses less digits than its factorization.

128457437074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371264444.

The product of its (nonzero) digits is 5268480, while the sum is 52.

The spelling of 128457437074 in words is "one hundred twenty-eight billion, four hundred fifty-seven million, four hundred thirty-seven thousand, seventy-four".