20540534554 has 16 divisors (see below), whose sum is σ = 32435409600. Its totient is φ = 9728830944.

The previous prime is 20540534479. The next prime is 20540534561. The reversal of 20540534554 is 45543504502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591382 + ... + 625150.

It is an arithmetic number, because the mean of its divisors is an integer number (2027213100).

Almost surely, 2^20540534554 is an apocalyptic number.

20540534554 is a deficient number, since it is larger than the sum of its proper divisors (11894875046).

20540534554 is a wasteful number, since it uses less digits than its factorization.

20540534554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49797.

The product of its (nonzero) digits is 240000, while the sum is 37.

The spelling of 20540534554 in words is "twenty billion, five hundred forty million, five hundred thirty-four thousand, five hundred fifty-four".