3706551531816 has 128 divisors (see below), whose sum is σ = 11255734702080. Its totient is φ = 992929729536.

The previous prime is 3706551531779. The next prime is 3706551531817. The reversal of 3706551531816 is 6181351556073.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (3706551531817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1716196 + ... + 3218451.

It is an arithmetic number, because the mean of its divisors is an integer number (87935427360).

Almost surely, 2^{3706551531816} is an apocalyptic number.

It is an amenable number.

3706551531816 is an abundant number, since it is smaller than the sum of its proper divisors (7549183170264).

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

3706551531816 is a wasteful number, since it uses less digits than its factorization.

3706551531816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934943 (or 4934939 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 3706551531816 in words is "three trillion, seven hundred six billion, five hundred fifty-one million, five hundred thirty-one thousand, eight hundred sixteen".