20600015400 has 288 divisors, whose sum is σ = 72389116800. Its totient is φ = 5244441600.

The previous prime is 20600015363. The next prime is 20600015419. The reversal of 20600015400 is 451000602.

It is a happy number.

20600015400 is a `hidden beast` number, since 20 + 600 + 0 + 1 + 5 + 40 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3465631 + ... + 3471569.

It is an arithmetic number, because the mean of its divisors is an integer number (251351100).

Almost surely, 2^20600015400 is an apocalyptic number.

20600015400 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 20600015400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36194558400).

20600015400 is an abundant number, since it is smaller than the sum of its proper divisors (51789101400).

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

20600015400 is a wasteful number, since it uses less digits than its factorization.

20600015400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049 (or 6037 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The spelling of 20600015400 in words is "twenty billion, six hundred million, fifteen thousand, four hundred".