61712166993 has 8 divisors (see below), whose sum is σ = 82285508256. Its totient is φ = 41140135200.

The previous prime is 61712166983. The next prime is 61712167061. The reversal of 61712166993 is 39966121716.

61712166993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61712166993 - 2¹³ = 61712158801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61712166983) 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, 211548 + ... + 410093.

It is an arithmetic number, because the mean of its divisors is an integer number (10285688532).

Almost surely, 2^61712166993 is an apocalyptic number.

It is an amenable number.

61712166993 is a deficient number, since it is larger than the sum of its proper divisors (20573341263).

61712166993 is a wasteful number, since it uses less digits than its factorization.

61712166993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654735.

The product of its digits is 734832, while the sum is 51.

The spelling of 61712166993 in words is "sixty-one billion, seven hundred twelve million, one hundred sixty-six thousand, nine hundred ninety-three".