91550741242 has 8 divisors (see below), whose sum is σ = 137498418036. Its totient is φ = 45717935232.

The previous prime is 91550741237. The next prime is 91550741251. The reversal of 91550741242 is 24214705519.

It can be written as a sum of positive squares in 2 ways, for example, as 91463300041 + 87441201 = 302429^2 + 9351^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 91550741195 and 91550741204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28715703 + ... + 28718890.

Almost surely, 2^91550741242 is an apocalyptic number.

91550741242 is a deficient number, since it is larger than the sum of its proper divisors (45947676794).

91550741242 is a wasteful number, since it uses less digits than its factorization.

91550741242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57435392.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 91550741242 in words is "ninety-one billion, five hundred fifty million, seven hundred forty-one thousand, two hundred forty-two".