218542020707 has 2 divisors, whose sum is σ = 218542020708. Its totient is φ = 218542020706.

The previous prime is 218542020689. The next prime is 218542020713. The reversal of 218542020707 is 707020245812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 218542020707 - 2¹⁸ = 218541758563 is a prime.

It is a super-2 number, since 2×218542020707² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (218542020757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109271010353 + 109271010354.

It is an arithmetic number, because the mean of its divisors is an integer number (109271010354).

Almost surely, 2^218542020707 is an apocalyptic number.

218542020707 is a deficient number, since it is larger than the sum of its proper divisors (1).

218542020707 is an equidigital number, since it uses as much as digits as its factorization.

218542020707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62720, while the sum is 38.

The spelling of 218542020707 in words is "two hundred eighteen billion, five hundred forty-two million, twenty thousand, seven hundred seven".