20606262040 has 384 divisors, whose sum is σ = 61018272000. Its totient is φ = 6199345152.

The previous prime is 20606262031. The next prime is 20606262043. The reversal of 20606262040 is 4026260602.

It is a super-3 number, since 3×20606262040³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606262043) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58374504 + ... + 58374856.

It is an arithmetic number, because the mean of its divisors is an integer number (158901750).

Almost surely, 2^20606262040 is an apocalyptic number.

20606262040 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 20606262040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30509136000).

20606262040 is an abundant number, since it is smaller than the sum of its proper divisors (40412009960).

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

20606262040 is a wasteful number, since it uses less digits than its factorization.

20606262040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 20606262040 in words is "twenty billion, six hundred six million, two hundred sixty-two thousand, forty".