72783105366515 has 8 divisors (see below), whose sum is σ = 87393673161360. Its totient is φ = 58190519812192.

The previous prime is 72783105366469. The next prime is 72783105366533. The reversal of 72783105366515 is 51566350138727.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72783105366515 is a prime.

It is an unprimeable number.

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, 4495551224 + ... + 4495567413.

It is an arithmetic number, because the mean of its divisors is an integer number (10924209145170).

Almost surely, 2^{72783105366515} is an apocalyptic number.

72783105366515 is a deficient number, since it is larger than the sum of its proper divisors (14610567794845).

72783105366515 is a wasteful number, since it uses less digits than its factorization.

72783105366515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8991120261.

The product of its (nonzero) digits is 31752000, while the sum is 59.

The spelling of 72783105366515 in words is "seventy-two trillion, seven hundred eighty-three billion, one hundred five million, three hundred sixty-six thousand, five hundred fifteen".