72547746321415 has 16 divisors (see below), whose sum is σ = 92181969362880. Its totient is φ = 54622018716160.

The previous prime is 72547746321409. The next prime is 72547746321467. The reversal of 72547746321415 is 51412364774527.

It is not a de Polignac number, because 72547746321415 - 2¹³ = 72547746313223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72547746321415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14770651 + ... + 19059580.

It is an arithmetic number, because the mean of its divisors is an integer number (5761373085180).

Almost surely, 2^{72547746321415} is an apocalyptic number.

72547746321415 is a deficient number, since it is larger than the sum of its proper divisors (19634223041465).

72547746321415 is a wasteful number, since it uses less digits than its factorization.

72547746321415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33855482.

The product of its digits is 39513600, while the sum is 58.

The spelling of 72547746321415 in words is "seventy-two trillion, five hundred forty-seven billion, seven hundred forty-six million, three hundred twenty-one thousand, four hundred fifteen".