458197784840 has 32 divisors (see below), whose sum is σ = 1043994960000. Its totient is φ = 180959123904.

The previous prime is 458197784839. The next prime is 458197784843. The reversal of 458197784840 is 48487791854.

It is not an unprimeable number, because it can be changed into a prime (458197784843) 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, 72496490 + ... + 72502809.

It is an arithmetic number, because the mean of its divisors is an integer number (32624842500).

Almost surely, 2^458197784840 is an apocalyptic number.

458197784840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

458197784840 is an abundant number, since it is smaller than the sum of its proper divisors (585797175160).

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

458197784840 is a wasteful number, since it uses less digits than its factorization.

458197784840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144999389 (or 144999385 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 65.

The spelling of 458197784840 in words is "four hundred fifty-eight billion, one hundred ninety-seven million, seven hundred eighty-four thousand, eight hundred forty".