128177782249098 has 16 divisors (see below), whose sum is σ = 269847962629920. Its totient is φ = 40477194394416.

The previous prime is 128177782249063. The next prime is 128177782249103. The reversal of 128177782249098 is 890942287771821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562183255365 + ... + 562183255592.

It is an arithmetic number, because the mean of its divisors is an integer number (16865497664370).

Almost surely, 2^{128177782249098} is an apocalyptic number.

128177782249098 is an abundant number, since it is smaller than the sum of its proper divisors (141670180380822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128177782249098 is a wasteful number, since it uses less digits than its factorization.

128177782249098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124366510981.

The product of its (nonzero) digits is 455196672, while the sum is 75.

The spelling of 128177782249098 in words is "one hundred twenty-eight trillion, one hundred seventy-seven billion, seven hundred eighty-two million, two hundred forty-nine thousand, ninety-eight".