384099978501 has 12 divisors (see below), whose sum is σ = 554818205760. Its totient is φ = 256063363560.

The previous prime is 384099978473. The next prime is 384099978529. The reversal of 384099978501 is 105879990483.

384099978501 is a `hidden beast` number, since 38 + 4 + 0 + 9 + 9 + 97 + 8 + 501 = 666.

It is an interprime number because it is at equal distance from previous prime (384099978473) and next prime (384099978529).

It is not a de Polignac number, because 384099978501 - 2¹⁰ = 384099977477 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384099978401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 618660 + ... + 1072818.

It is an arithmetic number, because the mean of its divisors is an integer number (46234850480).

Almost surely, 2^384099978501 is an apocalyptic number.

It is an amenable number.

384099978501 is a deficient number, since it is larger than the sum of its proper divisors (170718227259).

384099978501 is a wasteful number, since it uses less digits than its factorization.

384099978501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548136 (or 548133 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

Adding to 384099978501 its sum of digits (63), we get a square (384099978564 = 619758²).

The spelling of 384099978501 in words is "three hundred eighty-four billion, ninety-nine million, nine hundred seventy-eight thousand, five hundred one".