51899261749071 has 16 divisors (see below), whose sum is σ = 77924991249408. Its totient is φ = 30439449705600.

The previous prime is 51899261749019. The next prime is 51899261749147. The reversal of 51899261749071 is 17094716299815.

It is not a de Polignac number, because 51899261749071 - 2¹⁵ = 51899261716303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51899261748987 and 51899261749005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51899261749271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25366207066 + ... + 25366209111.

It is an arithmetic number, because the mean of its divisors is an integer number (4870311953088).

Almost surely, 2^{51899261749071} is an apocalyptic number.

51899261749071 is a deficient number, since it is larger than the sum of its proper divisors (26025729500337).

51899261749071 is a wasteful number, since it uses less digits than its factorization.

51899261749071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50732416222.

The product of its (nonzero) digits is 68584320, while the sum is 69.

The spelling of 51899261749071 in words is "fifty-one trillion, eight hundred ninety-nine billion, two hundred sixty-one million, seven hundred forty-nine thousand, seventy-one".