20540737652 has 12 divisors (see below), whose sum is σ = 35958592320. Its totient is φ = 10266854136.

The previous prime is 20540737603. The next prime is 20540737699. The reversal of 20540737652 is 25673704502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865502 + ... + 888917.

It is an arithmetic number, because the mean of its divisors is an integer number (2996549360).

Almost surely, 2^20540737652 is an apocalyptic number.

It is an amenable number.

20540737652 is a deficient number, since it is larger than the sum of its proper divisors (15417854668).

20540737652 is a wasteful number, since it uses less digits than its factorization.

20540737652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757350 (or 1757348 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 41.

The spelling of 20540737652 in words is "twenty billion, five hundred forty million, seven hundred thirty-seven thousand, six hundred fifty-two".