73911346560 has 384 divisors, whose sum is σ = 266686711200. Its totient is φ = 19560185856.

The previous prime is 73911346547. The next prime is 73911346571. The reversal of 73911346560 is 6564311937.

It is a happy number.

73911346560 is a `hidden beast` number, since 7 + 39 + 1 + 13 + 46 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21304506 + ... + 21307974.

Almost surely, 2^73911346560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73911346560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133343355600).

73911346560 is an abundant number, since it is smaller than the sum of its proper divisors (192775364640).

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

73911346560 is a wasteful number, since it uses less digits than its factorization.

73911346560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640 (or 3616 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 73911346560 in words is "seventy-three billion, nine hundred eleven million, three hundred forty-six thousand, five hundred sixty".