743221243501920 has 72 divisors (see below), whose sum is σ = 2536242493455216. Its totient is φ = 198192331600128.

The previous prime is 743221243501853. The next prime is 743221243501921. The reversal of 743221243501920 is 29105342122347.

743221243501920 is a `hidden beast` number, since 7 + 4 + 3 + 2 + 2 + 12 + 43 + 501 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743221243501921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258062930332 + ... + 258062933211.

It is an arithmetic number, because the mean of its divisors is an integer number (35225590186878).

Almost surely, 2^{743221243501920} is an apocalyptic number.

It is an amenable number.

743221243501920 is an abundant number, since it is smaller than the sum of its proper divisors (1793021249953296).

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

743221243501920 is a wasteful number, since it uses less digits than its factorization.

743221243501920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516125863564 (or 516125863553 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 743221243501920 in words is "seven hundred forty-three trillion, two hundred twenty-one billion, two hundred forty-three million, five hundred one thousand, nine hundred twenty".