73072397771 has 8 divisors (see below), whose sum is σ = 74221730784. Its totient is φ = 71926402240.

The previous prime is 73072397759. The next prime is 73072397789. The reversal of 73072397771 is 17779327037.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73072397771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73072397071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790220 + ... + 877833.

It is an arithmetic number, because the mean of its divisors is an integer number (9277716348).

Almost surely, 2^73072397771 is an apocalyptic number.

73072397771 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

73072397771 is a deficient number, since it is larger than the sum of its proper divisors (1149333013).

73072397771 is a wasteful number, since it uses less digits than its factorization.

73072397771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668741.

The product of its (nonzero) digits is 2722734, while the sum is 53.

The spelling of 73072397771 in words is "seventy-three billion, seventy-two million, three hundred ninety-seven thousand, seven hundred seventy-one".