99948691457 has 8 divisors (see below), whose sum is σ = 101265184776. Its totient is φ = 98638036992.

The previous prime is 99948691391. The next prime is 99948691511. The reversal of 99948691457 is 75419684999.

It can be written as a sum of positive squares in 4 ways, for example, as 23210827201 + 76737864256 = 152351^2 + 277016^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99948691457 - 2¹⁶ = 99948625921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99948699457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1425248 + ... + 1493729.

It is an arithmetic number, because the mean of its divisors is an integer number (12658148097).

It is a Proth number, since it is equal to 190637 ⋅ 2¹⁹ + 1 and 190637 < 2¹⁹.

Almost surely, 2^99948691457 is an apocalyptic number.

99948691457 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

99948691457 is a deficient number, since it is larger than the sum of its proper divisors (1316493319).

99948691457 is a wasteful number, since it uses less digits than its factorization.

99948691457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919427.

The product of its digits is 176359680, while the sum is 71.

The spelling of 99948691457 in words is "ninety-nine billion, nine hundred forty-eight million, six hundred ninety-one thousand, four hundred fifty-seven".