20115635542 has 16 divisors (see below), whose sum is σ = 30870423360. Its totient is φ = 9828119808.

The previous prime is 20115635531. The next prime is 20115635569. The reversal of 20115635542 is 24553651102.

It is a junction number, because it is equal to n+sod(n) for n = 20115635498 and 20115635507.

It is a congruent number.

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, 640933 + ... + 671584.

It is an arithmetic number, because the mean of its divisors is an integer number (1929401460).

Almost surely, 2^20115635542 is an apocalyptic number.

20115635542 is a deficient number, since it is larger than the sum of its proper divisors (10754787818).

20115635542 is a wasteful number, since it uses less digits than its factorization.

20115635542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312695.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 20115635542 in words is "twenty billion, one hundred fifteen million, six hundred thirty-five thousand, five hundred forty-two".