51435231945 has 8 divisors (see below), whose sum is σ = 82296371136. Its totient is φ = 27432123696.

The previous prime is 51435231919. The next prime is 51435231971. The reversal of 51435231945 is 54913253415.

It is an interprime number because it is at equal distance from previous prime (51435231919) and next prime (51435231971).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51435231945 - 2¹⁵ = 51435199177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51435231897 and 51435231906.

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, 1714507717 + ... + 1714507746.

It is an arithmetic number, because the mean of its divisors is an integer number (10287046392).

Almost surely, 2^51435231945 is an apocalyptic number.

It is an amenable number.

51435231945 is a deficient number, since it is larger than the sum of its proper divisors (30861139191).

51435231945 is a wasteful number, since it uses less digits than its factorization.

51435231945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3429015471.

The product of its digits is 324000, while the sum is 42.

The spelling of 51435231945 in words is "fifty-one billion, four hundred thirty-five million, two hundred thirty-one thousand, nine hundred forty-five".