103128899157 has 12 divisors (see below), whose sum is σ = 148968354444. Its totient is φ = 68750573760.

The previous prime is 103128899147. The next prime is 103128899191. The reversal of 103128899157 is 751998821301.

103128899157 is a `hidden beast` number, since 10 + 312 + 88 + 99 + 157 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51795387396 + 51333511761 = 227586^2 + 226569^2 .

It is not a de Polignac number, because 103128899157 - 2⁴ = 103128899141 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103128899147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194863 + ... + 494195.

It is an arithmetic number, because the mean of its divisors is an integer number (12414029537).

Almost surely, 2^103128899157 is an apocalyptic number.

It is an amenable number.

103128899157 is a deficient number, since it is larger than the sum of its proper divisors (45839455287).

103128899157 is a wasteful number, since it uses less digits than its factorization.

103128899157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337620 (or 337617 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The spelling of 103128899157 in words is "one hundred three billion, one hundred twenty-eight million, eight hundred ninety-nine thousand, one hundred fifty-seven".