20357061242 has 32 divisors (see below), whose sum is σ = 35190220800. Its totient is φ = 8651503728.

The previous prime is 20357061211. The next prime is 20357061251. The reversal of 20357061242 is 24216075302.

It is a junction number, because it is equal to n+sod(n) for n = 20357061199 and 20357061208.

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 15 ways as a sum of consecutive naturals, for example, 1782683 + ... + 1794065.

It is an arithmetic number, because the mean of its divisors is an integer number (1099694400).

Almost surely, 2^20357061242 is an apocalyptic number.

20357061242 is a deficient number, since it is larger than the sum of its proper divisors (14833159558).

20357061242 is a wasteful number, since it uses less digits than its factorization.

20357061242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12450.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 20357061242 in words is "twenty billion, three hundred fifty-seven million, sixty-one thousand, two hundred forty-two".