64567152077 has 4 divisors (see below), whose sum is σ = 64894904316. Its totient is φ = 64239399840.

The previous prime is 64567152043. The next prime is 64567152121. The reversal of 64567152077 is 77025176546.

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 55529037316 + 9038114761 = 235646^2 + 95069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64567152077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64567152007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163875824 + ... + 163876217.

It is an arithmetic number, because the mean of its divisors is an integer number (16223726079).

Almost surely, 2^64567152077 is an apocalyptic number.

It is an amenable number.

64567152077 is a deficient number, since it is larger than the sum of its proper divisors (327752239).

64567152077 is a wasteful number, since it uses less digits than its factorization.

64567152077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327752238.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 64567152077 in words is "sixty-four billion, five hundred sixty-seven million, one hundred fifty-two thousand, seventy-seven".