8157851312038 has 4 divisors (see below), whose sum is σ = 12236776968060. Its totient is φ = 4078925656018.

The previous prime is 8157851311933. The next prime is 8157851312099. The reversal of 8157851312038 is 8302131587518.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2039462828008 + ... + 2039462828011.

It is an arithmetic number, because the mean of its divisors is an integer number (3059194242015).

Almost surely, 2^{8157851312038} is an apocalyptic number.

8157851312038 is a deficient number, since it is larger than the sum of its proper divisors (4078925656022).

8157851312038 is a wasteful number, since it uses less digits than its factorization.

8157851312038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078925656021.

The product of its (nonzero) digits is 1612800, while the sum is 52.

The spelling of 8157851312038 in words is "eight trillion, one hundred fifty-seven billion, eight hundred fifty-one million, three hundred twelve thousand, thirty-eight".