20136072550 has 96 divisors (see below), whose sum is σ = 41938101504. Its totient is φ = 7131024000.

The previous prime is 20136072533. The next prime is 20136072553. The reversal of 20136072550 is 5527063102.

It is a super-2 number, since 2×20136072550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136072553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3452737 + ... + 3458563.

It is an arithmetic number, because the mean of its divisors is an integer number (436855224).

Almost surely, 2^20136072550 is an apocalyptic number.

20136072550 is an abundant number, since it is smaller than the sum of its proper divisors (21802028954).

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

20136072550 is a wasteful number, since it uses less digits than its factorization.

20136072550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6014 (or 6009 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 20136072550 in words is "twenty billion, one hundred thirty-six million, seventy-two thousand, five hundred fifty".