122543620545 has 32 divisors (see below), whose sum is σ = 197302355712. Its totient is φ = 64945978112.

The previous prime is 122543620517. The next prime is 122543620553. The reversal of 122543620545 is 545026345221.

It is a cyclic number.

It is not a de Polignac number, because 122543620545 - 2¹² = 122543616449 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13354579 + ... + 13363751.

It is an arithmetic number, because the mean of its divisors is an integer number (6165698616).

Almost surely, 2^122543620545 is an apocalyptic number.

122543620545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122543620545 is a deficient number, since it is larger than the sum of its proper divisors (74758735167).

122543620545 is a wasteful number, since it uses less digits than its factorization.

122543620545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14681.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 122543620545 its reverse (545026345221), we get a palindrome (667569965766).

The spelling of 122543620545 in words is "one hundred twenty-two billion, five hundred forty-three million, six hundred twenty thousand, five hundred forty-five".