51116611506009 has 32 divisors (see below), whose sum is σ = 78189952659456. Its totient is φ = 29097781424640.

The previous prime is 51116611505987. The next prime is 51116611506041. The reversal of 51116611506009 is 90060511661115.

It is not a de Polignac number, because 51116611506009 - 2¹³ = 51116611497817 is a prime.

It is a super-2 number, since 2×51116611506009² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51116611506049) 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, 41835534 + ... + 43040040.

It is an arithmetic number, because the mean of its divisors is an integer number (2443436020608).

Almost surely, 2^{51116611506009} is an apocalyptic number.

It is an amenable number.

51116611506009 is a deficient number, since it is larger than the sum of its proper divisors (27073341153447).

51116611506009 is a wasteful number, since it uses less digits than its factorization.

51116611506009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212245.

The product of its (nonzero) digits is 48600, while the sum is 42.

The spelling of 51116611506009 in words is "fifty-one trillion, one hundred sixteen billion, six hundred eleven million, five hundred six thousand, nine".