18777152940 has 384 divisors, whose sum is σ = 68108802048. Its totient is φ = 3759022080.

The previous prime is 18777152923. The next prime is 18777152959. The reversal of 18777152940 is 4925177781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8281687 + ... + 8283953.

It is an arithmetic number, because the mean of its divisors is an integer number (177366672).

Almost surely, 2^18777152940 is an apocalyptic number.

18777152940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18777152940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34054401024).

18777152940 is an abundant number, since it is smaller than the sum of its proper divisors (49331649108).

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

18777152940 is a wasteful number, since it uses less digits than its factorization.

18777152940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377 (or 2375 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 18777152940 in words is "eighteen billion, seven hundred seventy-seven million, one hundred fifty-two thousand, nine hundred forty".