72745465755 has 8 divisors (see below), whose sum is σ = 116392745232. Its totient is φ = 38797581728.

The previous prime is 72745465747. The next prime is 72745465757. The reversal of 72745465755 is 55756454727.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72745465755 - 2³ = 72745465747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72745465695 and 72745465704.

It is not an unprimeable number, because it can be changed into a prime (72745465757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2424848844 + ... + 2424848873.

It is an arithmetic number, because the mean of its divisors is an integer number (14549093154).

Almost surely, 2^72745465755 is an apocalyptic number.

72745465755 is a deficient number, since it is larger than the sum of its proper divisors (43647279477).

72745465755 is a wasteful number, since it uses less digits than its factorization.

72745465755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849697725.

The product of its digits is 41160000, while the sum is 57.

The spelling of 72745465755 in words is "seventy-two billion, seven hundred forty-five million, four hundred sixty-five thousand, seven hundred fifty-five".