91250100010 has 32 divisors (see below), whose sum is σ = 166616709840. Its totient is φ = 35974844928.

The previous prime is 91250100001. The next prime is 91250100023. The reversal of 91250100010 is 1000105219.

It can be written as a sum of positive squares in 8 ways, for example, as 72461640969 + 18788459041 = 269187^2 + 137071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017676 + ... + 1103704.

Almost surely, 2^91250100010 is an apocalyptic number.

91250100010 is a deficient number, since it is larger than the sum of its proper divisors (75366609830).

91250100010 is a wasteful number, since it uses less digits than its factorization.

91250100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87562.

The product of its (nonzero) digits is 90, while the sum is 19.

Adding to 91250100010 its reverse (1000105219), we get a palindrome (92250205229).

The spelling of 91250100010 in words is "ninety-one billion, two hundred fifty million, one hundred thousand, ten".