51155352520455 has 16 divisors (see below), whose sum is σ = 81849196145664. Its totient is φ = 27282643973280.

The previous prime is 51155352520453. The next prime is 51155352520499. The reversal of 51155352520455 is 55402525355115.

It is not a de Polignac number, because 51155352520455 - 2¹ = 51155352520453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51155352520453) 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, 11152051 + ... + 15055860.

It is an arithmetic number, because the mean of its divisors is an integer number (5115574759104).

Almost surely, 2^{51155352520455} is an apocalyptic number.

51155352520455 is a deficient number, since it is larger than the sum of its proper divisors (30693843625209).

51155352520455 is a wasteful number, since it uses less digits than its factorization.

51155352520455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26338046.

The product of its (nonzero) digits is 3750000, while the sum is 48.

The spelling of 51155352520455 in words is "fifty-one trillion, one hundred fifty-five billion, three hundred fifty-two million, five hundred twenty thousand, four hundred fifty-five".