73969380666720 has 1920 divisors, whose sum is σ = 337165058926080. Its totient is φ = 15011817246720.

The previous prime is 73969380666719. The next prime is 73969380666739. The reversal of 73969380666720 is 2766608396937.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 4906099822 + ... + 4906114898.

It is an arithmetic number, because the mean of its divisors is an integer number (175606801524).

Almost surely, 2^{73969380666720} is an apocalyptic number.

73969380666720 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 73969380666720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168582529463040).

73969380666720 is an abundant number, since it is smaller than the sum of its proper divisors (263195678259360).

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

73969380666720 is a wasteful number, since it uses less digits than its factorization.

73969380666720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15183 (or 15148 counting only the distinct ones).

The product of its (nonzero) digits is 740710656, while the sum is 72.

The spelling of 73969380666720 in words is "seventy-three trillion, nine hundred sixty-nine billion, three hundred eighty million, six hundred sixty-six thousand, seven hundred twenty".