91249754853 has 8 divisors (see below), whose sum is σ = 121972805728. Its totient is φ = 60679936944.

The previous prime is 91249754839. The next prime is 91249754887. The reversal of 91249754853 is 35845794219.

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

It is not a de Polignac number, because 91249754853 - 2⁹ = 91249754341 is a prime.

It is a super-3 number, since 3×91249754853³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91249754793 and 91249754802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91249754653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38306851 + ... + 38309232.

It is an arithmetic number, because the mean of its divisors is an integer number (15246600716).

Almost surely, 2^91249754853 is an apocalyptic number.

It is an amenable number.

91249754853 is a deficient number, since it is larger than the sum of its proper divisors (30723050875).

91249754853 is a wasteful number, since it uses less digits than its factorization.

91249754853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76616483.

The product of its digits is 10886400, while the sum is 57.

The spelling of 91249754853 in words is "ninety-one billion, two hundred forty-nine million, seven hundred fifty-four thousand, eight hundred fifty-three".