20460729542 has 64 divisors (see below), whose sum is σ = 36736934400. Its totient is φ = 8436718080.

The previous prime is 20460729529. The next prime is 20460729563. The reversal of 20460729542 is 24592706402.

It is a self number, because there is not a number n which added to its sum of digits gives 20460729542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8057309 + ... + 8059847.

It is an arithmetic number, because the mean of its divisors is an integer number (574014600).

Almost surely, 2^20460729542 is an apocalyptic number.

20460729542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20460729542 is a deficient number, since it is larger than the sum of its proper divisors (16276204858).

20460729542 is a wasteful number, since it uses less digits than its factorization.

20460729542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 20460729542 in words is "twenty billion, four hundred sixty million, seven hundred twenty-nine thousand, five hundred forty-two".