20401253134 has 4 divisors (see below), whose sum is σ = 30601879704. Its totient is φ = 10200626566.

The previous prime is 20401253129. The next prime is 20401253141. The reversal of 20401253134 is 43135210402.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20401253134² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20401253099 and 20401253108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100313282 + ... + 5100313285.

It is an arithmetic number, because the mean of its divisors is an integer number (7650469926).

Almost surely, 2^20401253134 is an apocalyptic number.

20401253134 is a deficient number, since it is larger than the sum of its proper divisors (10200626570).

20401253134 is a wasteful number, since it uses less digits than its factorization.

20401253134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200626569.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20401253134 its reverse (43135210402), we get a palindrome (63536463536).

The spelling of 20401253134 in words is "twenty billion, four hundred one million, two hundred fifty-three thousand, one hundred thirty-four".