128151651770746 has 4 divisors (see below), whose sum is σ = 192227477656122. Its totient is φ = 64075825885372.

The previous prime is 128151651770743. The next prime is 128151651770789. The reversal of 128151651770746 is 647077156151821.

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., 76814269140625 + 51337382630121 = 8764375^2 + 7165011^2 .

It is not an unprimeable number, because it can be changed into a prime (128151651770743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32037912942685 + ... + 32037912942688.

Almost surely, 2^{128151651770746} is an apocalyptic number.

128151651770746 is a deficient number, since it is larger than the sum of its proper divisors (64075825885376).

128151651770746 is an equidigital number, since it uses as much as digits as its factorization.

128151651770746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64075825885375.

The product of its (nonzero) digits is 19756800, while the sum is 61.

The spelling of 128151651770746 in words is "one hundred twenty-eight trillion, one hundred fifty-one billion, six hundred fifty-one million, seven hundred seventy thousand, seven hundred forty-six".