73194145920 has 1152 divisors, whose sum is σ = 310877835840. Its totient is φ = 15801827328.

The previous prime is 73194145919. The next prime is 73194145939. The reversal of 73194145920 is 2954149137.

73194145920 is a `hidden beast` number, since 7 + 3 + 19 + 41 + 4 + 592 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 449043759 + ... + 449043921.

Almost surely, 2^73194145920 is an apocalyptic number.

73194145920 is a gapful number since it is divisible by the number (70) 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 73194145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155438917920).

73194145920 is an abundant number, since it is smaller than the sum of its proper divisors (237683689920).

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

73194145920 is a wasteful number, since it uses less digits than its factorization.

73194145920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 73194145920 in words is "seventy-three billion, one hundred ninety-four million, one hundred forty-five thousand, nine hundred twenty".