473173021440 has 720 divisors, whose sum is σ = 1943657979648. Its totient is φ = 108113522688.

The previous prime is 473173021439. The next prime is 473173021487. The reversal of 473173021440 is 44120371374.

473173021440 is a `hidden beast` number, since 47 + 3 + 173 + 0 + 2 + 1 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 473173021395 and 473173021404.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 176358339 + ... + 176361021.

Almost surely, 2^473173021440 is an apocalyptic number.

473173021440 is a gapful number since it is divisible by the number (40) 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 473173021440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971828989824).

473173021440 is an abundant number, since it is smaller than the sum of its proper divisors (1470484958208).

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

473173021440 is an frugal number, since it uses more digits than its factorization.

473173021440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738 (or 2700 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 473173021440 in words is "four hundred seventy-three billion, one hundred seventy-three million, twenty-one thousand, four hundred forty".