20535433402 has 64 divisors (see below), whose sum is σ = 34635792384. Its totient is φ = 9053130240.

The previous prime is 20535433361. The next prime is 20535433421. The reversal of 20535433402 is 20433453502.

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, 30512938 + ... + 30513610.

It is an arithmetic number, because the mean of its divisors is an integer number (541184256).

Almost surely, 2^20535433402 is an apocalyptic number.

20535433402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20535433402 is a deficient number, since it is larger than the sum of its proper divisors (14100358982).

20535433402 is a wasteful number, since it uses less digits than its factorization.

20535433402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043.

The product of its (nonzero) digits is 43200, while the sum is 31.

Adding to 20535433402 its reverse (20433453502), we get a palindrome (40968886904).

The spelling of 20535433402 in words is "twenty billion, five hundred thirty-five million, four hundred thirty-three thousand, four hundred two".