245421213215334 has 128 divisors (see below), whose sum is σ = 535403463694848. Its totient is φ = 74548744657920.

The previous prime is 245421213215147. The next prime is 245421213215377. The reversal of 245421213215334 is 433512312124542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6728828122 + ... + 6728864594.

It is an arithmetic number, because the mean of its divisors is an integer number (4182839560116).

Almost surely, 2^{245421213215334} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245421213215334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267701731847424).

245421213215334 is an abundant number, since it is smaller than the sum of its proper divisors (289982250479514).

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

245421213215334 is a wasteful number, since it uses less digits than its factorization.

245421213215334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40182.

The product of its digits is 691200, while the sum is 42.

Adding to 245421213215334 its reverse (433512312124542), we get a palindrome (678933525339876).

The spelling of 245421213215334 in words is "two hundred forty-five trillion, four hundred twenty-one billion, two hundred thirteen million, two hundred fifteen thousand, three hundred thirty-four".