20437401611 has 16 divisors (see below), whose sum is σ = 22533110496. Its totient is φ = 18381600000.

The previous prime is 20437401599. The next prime is 20437401671. The reversal of 20437401611 is 11610473402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20437401611 - 2¹⁰ = 20437400587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20437401671) 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, 1639181 + ... + 1651601.

It is an arithmetic number, because the mean of its divisors is an integer number (1408319406).

Almost surely, 2^20437401611 is an apocalyptic number.

20437401611 is a deficient number, since it is larger than the sum of its proper divisors (2095708885).

20437401611 is a wasteful number, since it uses less digits than its factorization.

20437401611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14014.

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 20437401611 in words is "twenty billion, four hundred thirty-seven million, four hundred one thousand, six hundred eleven".