3551478381723 has 16 divisors (see below), whose sum is σ = 4760287727616. Its totient is φ = 2355161640960.

The previous prime is 3551478381701. The next prime is 3551478381727. The reversal of 3551478381723 is 3271838741553.

It is not a de Polignac number, because 3551478381723 - 2¹⁶ = 3551478316187 is a prime.

It is a super-2 number, since 2×3551478381723² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3551478381727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15983515 + ... + 16204187.

It is an arithmetic number, because the mean of its divisors is an integer number (297517982976).

Almost surely, 2^{3551478381723} is an apocalyptic number.

3551478381723 is a deficient number, since it is larger than the sum of its proper divisors (1208809345893).

3551478381723 is a wasteful number, since it uses less digits than its factorization.

3551478381723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248954.

The product of its digits is 16934400, while the sum is 57.

The spelling of 3551478381723 in words is "three trillion, five hundred fifty-one billion, four hundred seventy-eight million, three hundred eighty-one thousand, seven hundred twenty-three".