91452258039992 has 8 divisors (see below), whose sum is σ = 171472983825000. Its totient is φ = 45726129019992.

The previous prime is 91452258039991. The next prime is 91452258040009. The reversal of 91452258039992 is 29993085225419.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×91452258039992² (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 as a sum of consecutive naturals, namely, 5715766127492 + ... + 5715766127507.

It is an arithmetic number, because the mean of its divisors is an integer number (21434122978125).

Almost surely, 2^{91452258039992} is an apocalyptic number.

It is an amenable number.

91452258039992 is a deficient number, since it is larger than the sum of its proper divisors (80020725785008).

91452258039992 is a wasteful number, since it uses less digits than its factorization.

91452258039992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11431532255005 (or 11431532255001 counting only the distinct ones).

The product of its (nonzero) digits is 125971200, while the sum is 68.

The spelling of 91452258039992 in words is "ninety-one trillion, four hundred fifty-two billion, two hundred fifty-eight million, thirty-nine thousand, nine hundred ninety-two".