20552533040 has 160 divisors (see below), whose sum is σ = 52294527936. Its totient is φ = 7466434560.

The previous prime is 20552533033. The next prime is 20552533069. The reversal of 20552533040 is 4033525502.

It is a super-2 number, since 2×20552533040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20552532994 and 20552533012.

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, 39447980 + ... + 39448500.

Almost surely, 2^20552533040 is an apocalyptic number.

20552533040 is a gapful number since it is divisible by the number (20) 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 20552533040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26147263968).

20552533040 is an abundant number, since it is smaller than the sum of its proper divisors (31741994896).

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

20552533040 is a wasteful number, since it uses less digits than its factorization.

20552533040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

The spelling of 20552533040 in words is "twenty billion, five hundred fifty-two million, five hundred thirty-three thousand, forty".