72653505722555 has 4 divisors (see below), whose sum is σ = 87184206867072. Its totient is φ = 58122804578040.

The previous prime is 72653505722519. The next prime is 72653505722569. The reversal of 72653505722555 is 55522750535627.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72653505722555 - 2⁶ = 72653505722491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72653505722494 and 72653505722503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7265350572251 + ... + 7265350572260.

It is an arithmetic number, because the mean of its divisors is an integer number (21796051716768).

Almost surely, 2^{72653505722555} is an apocalyptic number.

72653505722555 is a deficient number, since it is larger than the sum of its proper divisors (14530701144517).

72653505722555 is a wasteful number, since it uses less digits than its factorization.

72653505722555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14530701144516.

The product of its (nonzero) digits is 110250000, while the sum is 59.

The spelling of 72653505722555 in words is "seventy-two trillion, six hundred fifty-three billion, five hundred five million, seven hundred twenty-two thousand, five hundred fifty-five".