64780577407 has 8 divisors (see below), whose sum is σ = 79729941536. Its totient is φ = 51254962272.

The previous prime is 64780577401. The next prime is 64780577437. The reversal of 64780577407 is 70477508746.

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 64780577407 - 2²³ = 64772188799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64780577401) 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, 355937148 + ... + 355937329.

It is an arithmetic number, because the mean of its divisors is an integer number (9966242692).

Almost surely, 2^64780577407 is an apocalyptic number.

64780577407 is a deficient number, since it is larger than the sum of its proper divisors (14949364129).

64780577407 is a wasteful number, since it uses less digits than its factorization.

64780577407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711874497.

The product of its (nonzero) digits is 9219840, while the sum is 55.

The spelling of 64780577407 in words is "sixty-four billion, seven hundred eighty million, five hundred seventy-seven thousand, four hundred seven".