72006454777 has 8 divisors (see below), whose sum is σ = 72414392960. Its totient is φ = 71598628080.

The previous prime is 72006454717. The next prime is 72006454783. The reversal of 72006454777 is 77745460027.

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 72006454777 - 2⁷ = 72006454649 is a prime.

It is a super-2 number, since 2×72006454777² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72006454777.

It is not an unprimeable number, because it can be changed into a prime (72006454717) 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, 1504624 + ... + 1551742.

It is an arithmetic number, because the mean of its divisors is an integer number (9051799120).

Almost surely, 2^72006454777 is an apocalyptic number.

It is an amenable number.

72006454777 is a deficient number, since it is larger than the sum of its proper divisors (407938183).

72006454777 is a wasteful number, since it uses less digits than its factorization.

72006454777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55743.

The product of its (nonzero) digits is 2304960, while the sum is 49.

The spelling of 72006454777 in words is "seventy-two billion, six million, four hundred fifty-four thousand, seven hundred seventy-seven".