20540760040 has 32 divisors (see below), whose sum is σ = 46648651680. Its totient is φ = 8139514432.

The previous prime is 20540760013. The next prime is 20540760067. The reversal of 20540760040 is 4006704502.

It is an interprime number because it is at equal distance from previous prime (20540760013) and next prime (20540760067).

It is a junction number, because it is equal to n+sod(n) for n = 20540759990 and 20540760008.

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 7 ways as a sum of consecutive naturals, for example, 2395342 + ... + 2403901.

It is an arithmetic number, because the mean of its divisors is an integer number (1457770365).

Almost surely, 2^20540760040 is an apocalyptic number.

20540760040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20540760040 is an abundant number, since it is smaller than the sum of its proper divisors (26107891640).

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

20540760040 is a wasteful number, since it uses less digits than its factorization.

20540760040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4799361 (or 4799357 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The spelling of 20540760040 in words is "twenty billion, five hundred forty million, seven hundred sixty thousand, forty".