5155878812581 has 8 divisors (see below), whose sum is σ = 5892476782464. Its totient is φ = 4419291806160.

The previous prime is 5155878812519. The next prime is 5155878812597. The reversal of 5155878812581 is 1852188785515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5155878812581 - 2¹³ = 5155878804389 is a prime.

It is a super-2 number, since 2×5155878812581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155878816581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1707130 + ... + 3636763.

It is an arithmetic number, because the mean of its divisors is an integer number (736559597808).

Almost surely, 2^{5155878812581} is an apocalyptic number.

It is an amenable number.

5155878812581 is a deficient number, since it is larger than the sum of its proper divisors (736597969883).

5155878812581 is a wasteful number, since it uses less digits than its factorization.

5155878812581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5481731.

The product of its digits is 35840000, while the sum is 64.

The spelling of 5155878812581 in words is "five trillion, one hundred fifty-five billion, eight hundred seventy-eight million, eight hundred twelve thousand, five hundred eighty-one".