64761370061447 has 8 divisors (see below), whose sum is σ = 65683444952640. Its totient is φ = 63841852938240.

The previous prime is 64761370061431. The next prime is 64761370061467. The reversal of 64761370061447 is 74416007316746.

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

It is a cyclic number.

It is not a de Polignac number, because 64761370061447 - 2⁴ = 64761370061431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64761370061392 and 64761370061401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64761370061467) 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, 639390998 + ... + 639492275.

It is an arithmetic number, because the mean of its divisors is an integer number (8210430619080).

Almost surely, 2^{64761370061447} is an apocalyptic number.

64761370061447 is a deficient number, since it is larger than the sum of its proper divisors (922074891193).

64761370061447 is a wasteful number, since it uses less digits than its factorization.

64761370061447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278883993.

The product of its (nonzero) digits is 14224896, while the sum is 56.

The spelling of 64761370061447 in words is "sixty-four trillion, seven hundred sixty-one billion, three hundred seventy million, sixty-one thousand, four hundred forty-seven".