245138678466432 has 128 divisors (see below), whose sum is σ = 679468801777920. Its totient is φ = 78159199641600.

The previous prime is 245138678466403. The next prime is 245138678466433. The reversal of 245138678466432 is 234664876831542.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-4 number, since 4×245138678466432⁴ (a number of 59 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245138678466433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1194699207 + ... + 1194904377.

It is an arithmetic number, because the mean of its divisors is an integer number (5308350013890).

Almost surely, 2^{245138678466432} is an apocalyptic number.

It is an amenable number.

245138678466432 is an abundant number, since it is smaller than the sum of its proper divisors (434330123311488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245138678466432 is a wasteful number, since it uses less digits than its factorization.

245138678466432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340492 (or 340480 counting only the distinct ones).

The product of its digits is 1114767360, while the sum is 69.

The spelling of 245138678466432 in words is "two hundred forty-five trillion, one hundred thirty-eight billion, six hundred seventy-eight million, four hundred sixty-six thousand, four hundred thirty-two".