149778849924 has 504 divisors, whose sum is σ = 457305289056. Its totient is φ = 42522278400.

The previous prime is 149778849889. The next prime is 149778849991. The reversal of 149778849924 is 429948877941.

149778849924 is a `hidden beast` number, since 1 + 49 + 7 + 78 + 8 + 499 + 24 = 666.

It is a super-2 number, since 2×149778849924² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 167 ways as a sum of consecutive naturals, for example, 1325476492 + ... + 1325476604.

It is an arithmetic number, because the mean of its divisors is an integer number (907351764).

Almost surely, 2^149778849924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149778849924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228652644528).

149778849924 is an abundant number, since it is smaller than the sum of its proper divisors (307526439132).

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

149778849924 is a wasteful number, since it uses less digits than its factorization.

149778849924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 203 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 72.

The spelling of 149778849924 in words is "one hundred forty-nine billion, seven hundred seventy-eight million, eight hundred forty-nine thousand, nine hundred twenty-four".