72929166608861 has 16 divisors (see below), whose sum is σ = 73336100894784. Its totient is φ = 72523426577664.

The previous prime is 72929166608839. The next prime is 72929166608869. The reversal of 72929166608861 is 16880666192927.

It is a cyclic number.

It is not a de Polignac number, because 72929166608861 - 2⁴⁶ = 2560422431197 is a prime.

It is a super-3 number, since 3×72929166608861³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72929166608869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289255925 + ... + 289507941.

It is an arithmetic number, because the mean of its divisors is an integer number (4583506305924).

Almost surely, 2^{72929166608861} is an apocalyptic number.

It is an amenable number.

72929166608861 is a deficient number, since it is larger than the sum of its proper divisors (406934285923).

72929166608861 is a wasteful number, since it uses less digits than its factorization.

72929166608861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254380.

The product of its (nonzero) digits is 188116992, while the sum is 71.

The spelling of 72929166608861 in words is "seventy-two trillion, nine hundred twenty-nine billion, one hundred sixty-six million, six hundred eight thousand, eight hundred sixty-one".