122357812478 has 16 divisors (see below), whose sum is σ = 200767451904. Its totient is φ = 55465638360.

The previous prime is 122357812471. The next prime is 122357812483. The reversal of 122357812478 is 874218753221.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122357812471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7569200 + ... + 7585347.

It is an arithmetic number, because the mean of its divisors is an integer number (12547965744).

Almost surely, 2^122357812478 is an apocalyptic number.

122357812478 is a deficient number, since it is larger than the sum of its proper divisors (78409639426).

122357812478 is a wasteful number, since it uses less digits than its factorization.

122357812478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15154927.

The product of its digits is 1505280, while the sum is 50.

The spelling of 122357812478 in words is "one hundred twenty-two billion, three hundred fifty-seven million, eight hundred twelve thousand, four hundred seventy-eight".