4921902467840 has 72 divisors (see below), whose sum is σ = 11802848851248. Its totient is φ = 1966530908160.

The previous prime is 4921902467767. The next prime is 4921902467849. The reversal of 4921902467840 is 487642091294.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4921902467849) 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, 1047131 + ... + 3307610.

Almost surely, 2^{4921902467840} is an apocalyptic number.

4921902467840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4921902467840 is an abundant number, since it is smaller than the sum of its proper divisors (6880946383408).

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

4921902467840 is an equidigital number, since it uses as much as digits as its factorization.

4921902467840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355645 (or 4355631 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 4921902467840 in words is "four trillion, nine hundred twenty-one billion, nine hundred two million, four hundred sixty-seven thousand, eight hundred forty".