91357490400 has 576 divisors, whose sum is σ = 346477824000. Its totient is φ = 20685772800.

The previous prime is 91357490359. The next prime is 91357490401. The reversal of 91357490400 is 409475319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91357490401) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26107851 + ... + 26111349.

It is an arithmetic number, because the mean of its divisors is an integer number (601524000).

Almost surely, 2^91357490400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91357490400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173238912000).

91357490400 is an abundant number, since it is smaller than the sum of its proper divisors (255120333600).

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

91357490400 is a wasteful number, since it uses less digits than its factorization.

91357490400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 91357490400 in words is "ninety-one billion, three hundred fifty-seven million, four hundred ninety thousand, four hundred".