20251254336433 has 32 divisors (see below), whose sum is σ = 21004853313024. Its totient is φ = 19513495483392.

The previous prime is 20251254336431. The next prime is 20251254336437. The reversal of 20251254336433 is 33463345215202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20251254336433 - 2¹ = 20251254336431 is a prime.

It is a super-2 number, since 2×20251254336433² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20251254336433.

It is not an unprimeable number, because it can be changed into a prime (20251254336431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3738460341 + ... + 3738465757.

It is an arithmetic number, because the mean of its divisors is an integer number (656401666032).

Almost surely, 2^{20251254336433} is an apocalyptic number.

It is an amenable number.

20251254336433 is a deficient number, since it is larger than the sum of its proper divisors (753598976591).

20251254336433 is a wasteful number, since it uses less digits than its factorization.

20251254336433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10041.

The product of its (nonzero) digits is 1555200, while the sum is 43.

The spelling of 20251254336433 in words is "twenty trillion, two hundred fifty-one billion, two hundred fifty-four million, three hundred thirty-six thousand, four hundred thirty-three".