73870434081 has 16 divisors (see below), whose sum is σ = 109444992000. Its totient is φ = 49243665744.

The previous prime is 73870434017. The next prime is 73870434089. The reversal of 73870434081 is 18043407837.

73870434081 is a `hidden beast` number, since 73 + 8 + 70 + 434 + 0 + 81 = 666.

It is not a de Polignac number, because 73870434081 - 2⁶ = 73870434017 is a prime.

It is a super-2 number, since 2×73870434081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73870434089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360895 + ... + 527243.

It is an arithmetic number, because the mean of its divisors is an integer number (6840312000).

Almost surely, 2^73870434081 is an apocalyptic number.

It is an amenable number.

73870434081 is a deficient number, since it is larger than the sum of its proper divisors (35574557919).

73870434081 is a wasteful number, since it uses less digits than its factorization.

73870434081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182805 (or 182799 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 73870434081 in words is "seventy-three billion, eight hundred seventy million, four hundred thirty-four thousand, eighty-one".