72150078649 has 8 divisors (see below), whose sum is σ = 79593550560. Its totient is φ = 64854002400.

The previous prime is 72150078647. The next prime is 72150078677. The reversal of 72150078649 is 94687005127.

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

It is not a de Polignac number, because 72150078649 - 2¹ = 72150078647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72150078647) 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 7 ways as a sum of consecutive naturals, for example, 36847887 + ... + 36849844.

It is an arithmetic number, because the mean of its divisors is an integer number (9949193820).

Almost surely, 2^72150078649 is an apocalyptic number.

It is an amenable number.

72150078649 is a deficient number, since it is larger than the sum of its proper divisors (7443471911).

72150078649 is a wasteful number, since it uses less digits than its factorization.

72150078649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73697831.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 72150078649 in words is "seventy-two billion, one hundred fifty million, seventy-eight thousand, six hundred forty-nine".