9777421154419 has 16 divisors (see below), whose sum is σ = 10006075183104. Its totient is φ = 9550425830400.

The previous prime is 9777421154323. The next prime is 9777421154443. The reversal of 9777421154419 is 9144511247779.

It is a cyclic number.

It is not a de Polignac number, because 9777421154419 - 2¹¹ = 9777421152371 is a prime.

It is a super-2 number, since 2×9777421154419² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9777421194419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45658839 + ... + 45872479.

It is an arithmetic number, because the mean of its divisors is an integer number (625379698944).

Almost surely, 2^{9777421154419} is an apocalyptic number.

9777421154419 is a deficient number, since it is larger than the sum of its proper divisors (228654028685).

9777421154419 is a wasteful number, since it uses less digits than its factorization.

9777421154419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217518.

The product of its digits is 17781120, while the sum is 61.

The spelling of 9777421154419 in words is "nine trillion, seven hundred seventy-seven billion, four hundred twenty-one million, one hundred fifty-four thousand, four hundred nineteen".