20417313774 has 64 divisors (see below), whose sum is σ = 48045166848. Its totient is φ = 5702611200.

The previous prime is 20417313731. The next prime is 20417313811. The reversal of 20417313774 is 47731371402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568594 + ... + 603434.

It is an arithmetic number, because the mean of its divisors is an integer number (750705732).

Almost surely, 2^20417313774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20417313774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24022583424).

20417313774 is an abundant number, since it is smaller than the sum of its proper divisors (27627853074).

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

20417313774 is a wasteful number, since it uses less digits than its factorization.

20417313774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35553.

The product of its (nonzero) digits is 98784, while the sum is 39.

The spelling of 20417313774 in words is "twenty billion, four hundred seventeen million, three hundred thirteen thousand, seven hundred seventy-four".