73000000073 has 64 divisors (see below), whose sum is σ = 104587929600. Its totient is φ = 49061583360.

The previous prime is 73000000069. The next prime is 73000000121. The reversal of 73000000073 is 37000000037.

It is a cyclic number.

It is not a de Polignac number, because 73000000073 - 2² = 73000000069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72999999991 and 73000000054.

It is not an unprimeable number, because it can be changed into a prime (73000000873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1362098 + ... + 1414676.

It is an arithmetic number, because the mean of its divisors is an integer number (1634186400).

Almost surely, 2^73000000073 is an apocalyptic number.

73000000073 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

73000000073 is a deficient number, since it is larger than the sum of its proper divisors (31587929527).

73000000073 is a wasteful number, since it uses less digits than its factorization.

73000000073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52702.

The product of its (nonzero) digits is 441, while the sum is 20.

The spelling of 73000000073 in words is "seventy-three billion, seventy-three", and thus it is an aban number and an uban number.