73880358561 has 12 divisors (see below), whose sum is σ = 106721480788. Its totient is φ = 49251076704.

The previous prime is 73880358533. The next prime is 73880358571. The reversal of 73880358561 is 16585308837.

73880358561 is a `hidden beast` number, since 73 + 8 + 8 + 0 + 3 + 5 + 8 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28188731025 + 45691627536 = 167895^2 + 213756^2 .

It is not a de Polignac number, because 73880358561 - 2¹⁷ = 73880227489 is a prime.

It is a super-2 number, since 2×73880358561² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73880358498 and 73880358507.

It is not an unprimeable number, because it can be changed into a prime (73880358571) 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, 10630 + ... + 384543.

Almost surely, 2^73880358561 is an apocalyptic number.

It is an amenable number.

73880358561 is a deficient number, since it is larger than the sum of its proper divisors (32841122227).

73880358561 is a wasteful number, since it uses less digits than its factorization.

73880358561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415952 (or 415949 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 73880358561 in words is "seventy-three billion, eight hundred eighty million, three hundred fifty-eight thousand, five hundred sixty-one".