20402651043 has 12 divisors (see below), whose sum is σ = 29471733928. Its totient is φ = 13601196000.

The previous prime is 20402650991. The next prime is 20402651069. The reversal of 20402651043 is 34015620402.

20402651043 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 2 + 651 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 20402651043 - 2¹² = 20402646947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20402650998 and 20402651016.

It is not an unprimeable number, because it can be changed into a prime (20402611043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401271 + ... + 449247.

Almost surely, 2^20402651043 is an apocalyptic number.

20402651043 is a deficient number, since it is larger than the sum of its proper divisors (9069082885).

20402651043 is a wasteful number, since it uses less digits than its factorization.

20402651043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95234 (or 95231 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 20402651043 in words is "twenty billion, four hundred two million, six hundred fifty-one thousand, forty-three".