122547442551 has 8 divisors (see below), whose sum is σ = 163447394544. Its totient is φ = 81672892800.

The previous prime is 122547442477. The next prime is 122547442559. The reversal of 122547442551 is 155244745221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122547442551 - 2²³ = 122539053943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122547442559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6339300 + ... + 6358601.

It is an arithmetic number, because the mean of its divisors is an integer number (20430924318).

Almost surely, 2^122547442551 is an apocalyptic number.

122547442551 is a deficient number, since it is larger than the sum of its proper divisors (40899951993).

122547442551 is a wasteful number, since it uses less digits than its factorization.

122547442551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12701121.

The product of its digits is 448000, while the sum is 42.

The spelling of 122547442551 in words is "one hundred twenty-two billion, five hundred forty-seven million, four hundred forty-two thousand, five hundred fifty-one".