18745540070531 has 2 divisors, whose sum is σ = 18745540070532. Its totient is φ = 18745540070530.

The previous prime is 18745540070513. The next prime is 18745540070549. The reversal of 18745540070531 is 13507004554781.

It is a happy number.

Together with previous prime (18745540070513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (18745540070513) and next prime (18745540070549).

It is a cyclic number.

It is not a de Polignac number, because 18745540070531 - 2³⁴ = 18728360201347 is a prime.

It is a super-2 number, since 2×18745540070531² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18745540070531.

It is not a weakly prime, because it can be changed into another prime (18745540070561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9372770035265 + 9372770035266.

It is an arithmetic number, because the mean of its divisors is an integer number (9372770035266).

Almost surely, 2^{18745540070531} is an apocalyptic number.

18745540070531 is a deficient number, since it is larger than the sum of its proper divisors (1).

18745540070531 is an equidigital number, since it uses as much as digits as its factorization.

18745540070531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352000, while the sum is 50.

The spelling of 18745540070531 in words is "eighteen trillion, seven hundred forty-five billion, five hundred forty million, seventy thousand, five hundred thirty-one".