64144104165061 has 8 divisors (see below), whose sum is σ = 64156146500160. Its totient is φ = 64132062259968.

The previous prime is 64144104165023. The next prime is 64144104165101. The reversal of 64144104165061 is 16056140144146.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64144104165061 is a prime.

It is a super-2 number, since 2×64144104165061² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64144104164999 and 64144104165017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64144104165161) 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, 553973605 + ... + 554089381.

It is an arithmetic number, because the mean of its divisors is an integer number (8019518312520).

Almost surely, 2^{64144104165061} is an apocalyptic number.

It is an amenable number.

64144104165061 is a deficient number, since it is larger than the sum of its proper divisors (12042335099).

64144104165061 is a wasteful number, since it uses less digits than its factorization.

64144104165061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215003.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 64144104165061 in words is "sixty-four trillion, one hundred forty-four billion, one hundred four million, one hundred sixty-five thousand, sixty-one".