20495295744 has 1152 divisors, whose sum is σ = 80530329600. Its totient is φ = 4459069440.

The previous prime is 20495295739. The next prime is 20495295767. The reversal of 20495295744 is 44759259402.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 553926894 + ... + 553926930.

It is an arithmetic number, because the mean of its divisors is an integer number (69904800).

Almost surely, 2^20495295744 is an apocalyptic number.

20495295744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20495295744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40265164800).

20495295744 is an abundant number, since it is smaller than the sum of its proper divisors (60035033856).

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

20495295744 is a wasteful number, since it uses less digits than its factorization.

20495295744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 20495295744 in words is "twenty billion, four hundred ninety-five million, two hundred ninety-five thousand, seven hundred forty-four".