9429861772864 has 63 divisors (see below), whose sum is σ = 20263206365937. Its totient is φ = 4352096496384.

The previous prime is 9429861772813. The next prime is 9429861772913. The reversal of 9429861772864 is 4682771689249.

The square root of 9429861772864 is 3070808.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1394949966400 + 8034911806464 = 1181080^2 + 2834592^2 .

It is a super-2 number, since 2×9429861772864² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 319349269 + ... + 319378795.

Almost surely, 2^{9429861772864} is an apocalyptic number.

9429861772864 is the 3070808-th square number.

It is an amenable number.

9429861772864 is an abundant number, since it is smaller than the sum of its proper divisors (10833344593073).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9429861772864 is an frugal number, since it uses more digits than its factorization.

9429861772864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59092 (or 29542 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 73.

The spelling of 9429861772864 in words is "nine trillion, four hundred twenty-nine billion, eight hundred sixty-one million, seven hundred seventy-two thousand, eight hundred sixty-four".