172784994480 has 240 divisors, whose sum is σ = 687727482624. Its totient is φ = 39493681920.

The previous prime is 172784994433. The next prime is 172784994497. The reversal of 172784994480 is 84499487271.

172784994480 is a `hidden beast` number, since 1 + 7 + 27 + 8 + 49 + 94 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 498786 + ... + 770945.

Almost surely, 2^172784994480 is an apocalyptic number.

172784994480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172784994480 is an abundant number, since it is smaller than the sum of its proper divisors (514942488144).

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

172784994480 is a wasteful number, since it uses less digits than its factorization.

172784994480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269766 (or 1269748 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 172784994480 in words is "one hundred seventy-two billion, seven hundred eighty-four million, nine hundred ninety-four thousand, four hundred eighty".