4977447771840 has 112 divisors (see below), whose sum is σ = 16635154456320. Its totient is φ = 1257460485120.

The previous prime is 4977447771767. The next prime is 4977447771841. The reversal of 4977447771840 is 481777447794.

It is not an unprimeable number, because it can be changed into a prime (4977447771841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136424956 + ... + 136461435.

Almost surely, 2^{4977447771840} is an apocalyptic number.

4977447771840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4977447771840 is an abundant number, since it is smaller than the sum of its proper divisors (11657706684480).

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

4977447771840 is a wasteful number, since it uses less digits than its factorization.

4977447771840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272886430 (or 272886420 counting only the distinct ones).

The product of its (nonzero) digits is 309786624, while the sum is 69.

The spelling of 4977447771840 in words is "four trillion, nine hundred seventy-seven billion, four hundred forty-seven million, seven hundred seventy-one thousand, eight hundred forty".