38277781500 has 192 divisors, whose sum is σ = 131782210560. Its totient is φ = 8447443200.

The previous prime is 38277781499. The next prime is 38277781543. The reversal of 38277781500 is 518777283.

It is a self number, because there is not a number n which added to its sum of digits gives 38277781500.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 241647 + ... + 367353.

It is an arithmetic number, because the mean of its divisors is an integer number (686365680).

Almost surely, 2^38277781500 is an apocalyptic number.

38277781500 is a gapful number since it is divisible by the number (30) 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 38277781500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65891105280).

38277781500 is an abundant number, since it is smaller than the sum of its proper divisors (93504429060).

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

38277781500 is a wasteful number, since it uses less digits than its factorization.

38277781500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125765 (or 125753 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 38277781500 in words is "thirty-eight billion, two hundred seventy-seven million, seven hundred eighty-one thousand, five hundred".