487439135920 has 80 divisors (see below), whose sum is σ = 1236829552128. Its totient is φ = 177177957120.

The previous prime is 487439135917. The next prime is 487439135923. The reversal of 487439135920 is 29531934784.

It is an interprime number because it is at equal distance from previous prime (487439135917) and next prime (487439135923).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×487439135920² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (487439135923) 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, 2058697 + ... + 2283223.

Almost surely, 2^487439135920 is an apocalyptic number.

487439135920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

487439135920 is an abundant number, since it is smaller than the sum of its proper divisors (749390416208).

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

487439135920 is a wasteful number, since it uses less digits than its factorization.

487439135920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227018 (or 227012 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 487439135920 in words is "four hundred eighty-seven billion, four hundred thirty-nine million, one hundred thirty-five thousand, nine hundred twenty".