9745723219680 has 192 divisors, whose sum is σ = 38982892999680. Its totient is φ = 2227593871872.

The previous prime is 9745723219597. The next prime is 9745723219691. The reversal of 9745723219680 is 869123275479.

9745723219680 is a `hidden beast` number, since 97 + 4 + 57 + 232 + 196 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161109364 + ... + 161169843.

It is an arithmetic number, because the mean of its divisors is an integer number (203035901040).

It is a 1-persistent number, because it is pandigital, but 2⋅9745723219680 = 19491446439360 is not.

Almost surely, 2^{9745723219680} is an apocalyptic number.

9745723219680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9745723219680 is an abundant number, since it is smaller than the sum of its proper divisors (29237169780000).

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

9745723219680 is a wasteful number, since it uses less digits than its factorization.

9745723219680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322279238 (or 322279224 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 9745723219680 in words is "nine trillion, seven hundred forty-five billion, seven hundred twenty-three million, two hundred nineteen thousand, six hundred eighty".