64722671455 has 16 divisors (see below), whose sum is σ = 84174368544. Its totient is φ = 47490768000.

The previous prime is 64722671417. The next prime is 64722671537. The reversal of 64722671455 is 55417622746.

It is not a de Polignac number, because 64722671455 - 2¹⁷ = 64722540383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64722671399 and 64722671408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160921 + ... + 3181330.

It is an arithmetic number, because the mean of its divisors is an integer number (5260898034).

Almost surely, 2^64722671455 is an apocalyptic number.

64722671455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64722671455 is a deficient number, since it is larger than the sum of its proper divisors (19451697089).

64722671455 is a wasteful number, since it uses less digits than its factorization.

64722671455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342426.

The product of its digits is 2822400, while the sum is 49.

The spelling of 64722671455 in words is "sixty-four billion, seven hundred twenty-two million, six hundred seventy-one thousand, four hundred fifty-five".