20295645552 has 480 divisors, whose sum is σ = 73667784960. Its totient is φ = 5302402560.

The previous prime is 20295645527. The next prime is 20295645581. The reversal of 20295645552 is 25554659202.

20295645552 is a `hidden beast` number, since 2 + 0 + 2 + 9 + 56 + 45 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20295645498 and 20295645507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36048823 + ... + 36049385.

It is an arithmetic number, because the mean of its divisors is an integer number (153474552).

Almost surely, 2^20295645552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20295645552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36833892480).

20295645552 is an abundant number, since it is smaller than the sum of its proper divisors (53372139408).

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

20295645552 is a wasteful number, since it uses less digits than its factorization.

20295645552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 20295645552 in words is "twenty billion, two hundred ninety-five million, six hundred forty-five thousand, five hundred fifty-two".