51017201619 has 32 divisors (see below), whose sum is σ = 70147392000. Its totient is φ = 32957114112.

The previous prime is 51017201617. The next prime is 51017201629. The reversal of 51017201619 is 91610271015.

It is not a de Polignac number, because 51017201619 - 2¹ = 51017201617 is a prime.

It is a super-2 number, since 2×51017201619² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51017201619.

It is not an unprimeable number, because it can be changed into a prime (51017201617) 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, 51899002 + ... + 51899984.

It is an arithmetic number, because the mean of its divisors is an integer number (2192106000).

Almost surely, 2^51017201619 is an apocalyptic number.

51017201619 is a deficient number, since it is larger than the sum of its proper divisors (19130190381).

51017201619 is a wasteful number, since it uses less digits than its factorization.

51017201619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 3780, while the sum is 33.

The spelling of 51017201619 in words is "fifty-one billion, seventeen million, two hundred one thousand, six hundred nineteen".