3547399921123 has 4 divisors (see below), whose sum is σ = 3547427102128. Its totient is φ = 3547372740120.

The previous prime is 3547399921073. The next prime is 3547399921139. The reversal of 3547399921123 is 3211299937453.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3547399921123 is a prime.

It is a super-2 number, since 2×3547399921123² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3547399981123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13393788 + ... + 13656073.

It is an arithmetic number, because the mean of its divisors is an integer number (886856775532).

Almost surely, 2^{3547399921123} is an apocalyptic number.

3547399921123 is a deficient number, since it is larger than the sum of its proper divisors (27181005).

3547399921123 is a wasteful number, since it uses less digits than its factorization.

3547399921123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27181004.

The product of its digits is 11022480, while the sum is 58.

The spelling of 3547399921123 in words is "three trillion, five hundred forty-seven billion, three hundred ninety-nine million, nine hundred twenty-one thousand, one hundred twenty-three".