72355073551 has 16 divisors (see below), whose sum is σ = 74357486784. Its totient is φ = 70377658624.

The previous prime is 72355073519. The next prime is 72355073569. The reversal of 72355073551 is 15537055327.

It is a cyclic number.

It is not a de Polignac number, because 72355073551 - 2⁵ = 72355073519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72355073498 and 72355073507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72355073501) 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, 5780766 + ... + 5793268.

It is an arithmetic number, because the mean of its divisors is an integer number (4647342924).

Almost surely, 2^72355073551 is an apocalyptic number.

72355073551 is a deficient number, since it is larger than the sum of its proper divisors (2002413233).

72355073551 is a wasteful number, since it uses less digits than its factorization.

72355073551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13490.

The product of its (nonzero) digits is 551250, while the sum is 43.

The spelling of 72355073551 in words is "seventy-two billion, three hundred fifty-five million, seventy-three thousand, five hundred fifty-one".