20401758434 has 16 divisors (see below), whose sum is σ = 30965362560. Its totient is φ = 10080623280.

The previous prime is 20401758413. The next prime is 20401758491. The reversal of 20401758434 is 43485710402.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100289 + ... + 225524.

It is an arithmetic number, because the mean of its divisors is an integer number (1935335160).

Almost surely, 2^20401758434 is an apocalyptic number.

20401758434 is a deficient number, since it is larger than the sum of its proper divisors (10563604126).

20401758434 is a wasteful number, since it uses less digits than its factorization.

20401758434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326185.

The product of its (nonzero) digits is 107520, while the sum is 38.

The spelling of 20401758434 in words is "twenty billion, four hundred one million, seven hundred fifty-eight thousand, four hundred thirty-four".