72995597397 has 6 divisors (see below), whose sum is σ = 105438085142. Its totient is φ = 48663731592.

The previous prime is 72995597383. The next prime is 72995597401. The reversal of 72995597397 is 79379559927.

72995597397 is a `hidden beast` number, since 7 + 29 + 9 + 5 + 597 + 3 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 66807257841 + 6188339556 = 258471^2 + 78666^2 .

It is not a de Polignac number, because 72995597397 - 2¹⁴ = 72995581013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72995597197) 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 5 ways as a sum of consecutive naturals, for example, 4055310958 + ... + 4055310975.

Almost surely, 2^72995597397 is an apocalyptic number.

It is an amenable number.

72995597397 is a deficient number, since it is larger than the sum of its proper divisors (32442487745).

72995597397 is a wasteful number, since it uses less digits than its factorization.

72995597397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110621939 (or 8110621936 counting only the distinct ones).

The product of its digits is 337563450, while the sum is 72.

The spelling of 72995597397 in words is "seventy-two billion, nine hundred ninety-five million, five hundred ninety-seven thousand, three hundred ninety-seven".