91853072098 has 4 divisors (see below), whose sum is σ = 137779608150. Its totient is φ = 45926536048.

The previous prime is 91853072089. The next prime is 91853072099. The reversal of 91853072098 is 89027035819.

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., 63717370929 + 28135701169 = 252423^2 + 167737^2 .

It is a super-2 number, since 2×91853072098² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91853072099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22963268023 + ... + 22963268026.

Almost surely, 2^91853072098 is an apocalyptic number.

91853072098 is a deficient number, since it is larger than the sum of its proper divisors (45926536052).

91853072098 is a wasteful number, since it uses less digits than its factorization.

91853072098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45926536051.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 91853072098 in words is "ninety-one billion, eight hundred fifty-three million, seventy-two thousand, ninety-eight".