845498397744 has 1200 divisors, whose sum is σ = 3339083784960. Its totient is φ = 200975385600.

The previous prime is 845498397707. The next prime is 845498397797. The reversal of 845498397744 is 447793894548.

845498397744 is a `hidden beast` number, since 8 + 4 + 5 + 498 + 3 + 97 + 7 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 2554375659 + ... + 2554375989.

Almost surely, 2^845498397744 is an apocalyptic number.

845498397744 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845498397744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669541892480).

845498397744 is an abundant number, since it is smaller than the sum of its proper divisors (2493585387216).

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

845498397744 is a wasteful number, since it uses less digits than its factorization.

845498397744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 546 counting only the distinct ones).

The product of its digits is 975421440, while the sum is 72.

The spelling of 845498397744 in words is "eight hundred forty-five billion, four hundred ninety-eight million, three hundred ninety-seven thousand, seven hundred forty-four".