18537445146007 has 16 divisors (see below), whose sum is σ = 18647175010464. Its totient is φ = 18428015232000.

The previous prime is 18537445145929. The next prime is 18537445146037. The reversal of 18537445146007 is 70064154473581.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18537445146007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18537445146037) 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, 321572907 + ... + 321630547.

It is an arithmetic number, because the mean of its divisors is an integer number (1165448438154).

Almost surely, 2^{18537445146007} is an apocalyptic number.

18537445146007 is a deficient number, since it is larger than the sum of its proper divisors (109729864457).

18537445146007 is a wasteful number, since it uses less digits than its factorization.

18537445146007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60210.

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 18537445146007 in words is "eighteen trillion, five hundred thirty-seven billion, four hundred forty-five million, one hundred forty-six thousand, seven".