51455158011 has 24 divisors (see below), whose sum is σ = 77384786640. Its totient is φ = 33791367456.

The previous prime is 51455157991. The next prime is 51455158031. The reversal of 51455158011 is 11085155415.

51455158011 is a `hidden beast` number, since 5 + 14 + 5 + 51 + 580 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (51455157991) and next prime (51455158031).

It is not a de Polignac number, because 51455158011 - 2⁹ = 51455157499 is a prime.

It is a super-2 number, since 2×51455158011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51455158031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91066 + ... + 333471.

It is an arithmetic number, because the mean of its divisors is an integer number (3224366110).

Almost surely, 2^51455158011 is an apocalyptic number.

51455158011 is a deficient number, since it is larger than the sum of its proper divisors (25929628629).

51455158011 is an equidigital number, since it uses as much as digits as its factorization.

51455158011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424680 (or 424607 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 36.

The spelling of 51455158011 in words is "fifty-one billion, four hundred fifty-five million, one hundred fifty-eight thousand, eleven".