469778641920 has 2112 divisors, whose sum is σ = 2163078328320. Its totient is φ = 95169282048.

The previous prime is 469778641919. The next prime is 469778641921. The reversal of 469778641920 is 29146877964.

469778641920 is a `hidden beast` number, since 46 + 97 + 78 + 6 + 419 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (469778641919) and next prime (469778641921).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469778641921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2813045677 + ... + 2813045843.

Almost surely, 2^469778641920 is an apocalyptic number.

469778641920 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 469778641920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081539164160).

469778641920 is an abundant number, since it is smaller than the sum of its proper divisors (1693299686400).

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

469778641920 is a wasteful number, since it uses less digits than its factorization.

469778641920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 469778641920 in words is "four hundred sixty-nine billion, seven hundred seventy-eight million, six hundred forty-one thousand, nine hundred twenty".