210145219124478 has 128 divisors (see below), whose sum is σ = 504648237588480. Its totient is φ = 57587284782720.

The previous prime is 210145219124473. The next prime is 210145219124531. The reversal of 210145219124478 is 874421912541012.

It is a super-2 number, since 2×210145219124478² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210145219124478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210145219124473) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6565476 + ... + 21526632.

It is an arithmetic number, because the mean of its divisors is an integer number (3942564356160).

Almost surely, 2^{210145219124478} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210145219124478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252324118794240).

210145219124478 is an abundant number, since it is smaller than the sum of its proper divisors (294503018464002).

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

210145219124478 is a wasteful number, since it uses less digits than its factorization.

210145219124478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14961702.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 210145219124478 in words is "two hundred ten trillion, one hundred forty-five billion, two hundred nineteen million, one hundred twenty-four thousand, four hundred seventy-eight".