20400434261701 has 16 divisors (see below), whose sum is σ = 22683629380608. Its totient is φ = 18219509510400.

The previous prime is 20400434261689. The next prime is 20400434261777. The reversal of 20400434261701 is 10716243400402.

It is a cyclic number.

It is not a de Polignac number, because 20400434261701 - 2²⁷ = 20400300043973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400434262701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4088185 + ... + 7583806.

It is an arithmetic number, because the mean of its divisors is an integer number (1417726836288).

Almost surely, 2^{20400434261701} is an apocalyptic number.

It is an amenable number.

20400434261701 is a deficient number, since it is larger than the sum of its proper divisors (2283195118907).

20400434261701 is a wasteful number, since it uses less digits than its factorization.

20400434261701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11676372.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 20400434261701 in words is "twenty trillion, four hundred billion, four hundred thirty-four million, two hundred sixty-one thousand, seven hundred one".