37781481523 has 8 divisors (see below), whose sum is σ = 38638018368. Its totient is φ = 36927139584.

The previous prime is 37781481497. The next prime is 37781481533. The reversal of 37781481523 is 32518418773.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37781481523 - 2⁹ = 37781481011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (37781481533) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 513886 + ... + 582787.

It is an arithmetic number, because the mean of its divisors is an integer number (4829752296).

Almost surely, 2^37781481523 is an apocalyptic number.

37781481523 is a deficient number, since it is larger than the sum of its proper divisors (856536845).

37781481523 is a wasteful number, since it uses less digits than its factorization.

37781481523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097453.

The product of its digits is 1128960, while the sum is 49.

The spelling of 37781481523 in words is "thirty-seven billion, seven hundred eighty-one million, four hundred eighty-one thousand, five hundred twenty-three".