64154834077 has 4 divisors (see below), whose sum is σ = 64790030556. Its totient is φ = 63519637600.

The previous prime is 64154834063. The next prime is 64154834113. The reversal of 64154834077 is 77043845146.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41504283076 + 22650551001 = 203726^2 + 150501^2 .

It is a cyclic number.

It is not a de Polignac number, because 64154834077 - 2³¹ = 62007350429 is a prime.

It is a super-3 number, since 3×64154834077³ (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64154834077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64154834017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317598088 + ... + 317598289.

It is an arithmetic number, because the mean of its divisors is an integer number (16197507639).

Almost surely, 2^64154834077 is an apocalyptic number.

It is an amenable number.

64154834077 is a deficient number, since it is larger than the sum of its proper divisors (635196479).

64154834077 is a wasteful number, since it uses less digits than its factorization.

64154834077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635196478.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 64154834077 in words is "sixty-four billion, one hundred fifty-four million, eight hundred thirty-four thousand, seventy-seven".