91452258039990 has 32 divisors (see below), whose sum is σ = 227053882032480. Its totient is φ = 23546328506624.

The previous prime is 91452258039971. The next prime is 91452258039991. The reversal of 91452258039990 is 9993085225419.

It is a super-2 number, since 2×91452258039990² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91452258039991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52558768119 + ... + 52558769858.

It is an arithmetic number, because the mean of its divisors is an integer number (7095433813515).

Almost surely, 2^{91452258039990} is an apocalyptic number.

91452258039990 is an abundant number, since it is smaller than the sum of its proper divisors (135601623992490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91452258039990 is a wasteful number, since it uses less digits than its factorization.

91452258039990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105117538016.

The product of its (nonzero) digits is 62985600, while the sum is 66.

The spelling of 91452258039990 in words is "ninety-one trillion, four hundred fifty-two billion, two hundred fifty-eight million, thirty-nine thousand, nine hundred ninety".