8151628846538 has 4 divisors (see below), whose sum is σ = 12227443269810. Its totient is φ = 4075814423268.

The previous prime is 8151628846499. The next prime is 8151628846541. The reversal of 8151628846538 is 8356488261518.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 6852683124169 + 1298945722369 = 2617763^2 + 1139713^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2037907211633 + ... + 2037907211636.

Almost surely, 2^{8151628846538} is an apocalyptic number.

8151628846538 is a deficient number, since it is larger than the sum of its proper divisors (4075814423272).

8151628846538 is a wasteful number, since it uses less digits than its factorization.

8151628846538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4075814423271.

The product of its digits is 88473600, while the sum is 65.

The spelling of 8151628846538 in words is "eight trillion, one hundred fifty-one billion, six hundred twenty-eight million, eight hundred forty-six thousand, five hundred thirty-eight".