6480477900 has 180 divisors, whose sum is σ = 22623451312. Its totient is φ = 1595168640.

The previous prime is 6480477889. The next prime is 6480477959. The reversal of 6480477900 is 97740846.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 74529 + ... + 136071.

Almost surely, 2^6480477900 is an apocalyptic number.

6480477900 is a gapful number since it is divisible by the number (60) 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 6480477900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11311725656).

6480477900 is an abundant number, since it is smaller than the sum of its proper divisors (16142973412).

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

6480477900 is a wasteful number, since it uses less digits than its factorization.

6480477900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61582 (or 61566 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 6480477900 is about 80501.4155155051. The cubic root of 6480477900 is about 1864.3853341251.

The spelling of 6480477900 in words is "six billion, four hundred eighty million, four hundred seventy-seven thousand, nine hundred".