72015120651 has 8 divisors (see below), whose sum is σ = 97099039440. Its totient is φ = 47470641152.

The previous prime is 72015120631. The next prime is 72015120659. The reversal of 72015120651 is 15602151027.

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 72015120651 - 2⁶ = 72015120587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72015120659) 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, 134859510 + ... + 134860043.

It is an arithmetic number, because the mean of its divisors is an integer number (12137379930).

Almost surely, 2^72015120651 is an apocalyptic number.

72015120651 is a deficient number, since it is larger than the sum of its proper divisors (25083918789).

72015120651 is a wasteful number, since it uses less digits than its factorization.

72015120651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269719645.

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 72015120651 its reverse (15602151027), we get a palindrome (87617271678).

The spelling of 72015120651 in words is "seventy-two billion, fifteen million, one hundred twenty thousand, six hundred fifty-one".