51901654433 has 4 divisors (see below), whose sum is σ = 54158248128. Its totient is φ = 49645060740.

The previous prime is 51901654421. The next prime is 51901654471. The reversal of 51901654433 is 33445610915.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51901654433 - 2¹² = 51901650337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51901654733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128296813 + ... + 1128296858.

It is an arithmetic number, because the mean of its divisors is an integer number (13539562032).

Almost surely, 2^51901654433 is an apocalyptic number.

It is an amenable number.

51901654433 is a deficient number, since it is larger than the sum of its proper divisors (2256593695).

51901654433 is a wasteful number, since it uses less digits than its factorization.

51901654433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256593694.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 51901654433 in words is "fifty-one billion, nine hundred one million, six hundred fifty-four thousand, four hundred thirty-three".