56121026005 has 8 divisors (see below), whose sum is σ = 73467525024. Its totient is φ = 40815291600.

The previous prime is 56121025973. The next prime is 56121026021. The reversal of 56121026005 is 50062012165.

56121026005 = 12876² + 12877² + ... + 13205².

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

It is not a de Polignac number, because 56121026005 - 2⁵ = 56121025973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510191091 + ... + 510191200.

It is an arithmetic number, because the mean of its divisors is an integer number (9183440628).

Almost surely, 2^56121026005 is an apocalyptic number.

56121026005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56121026005 is a deficient number, since it is larger than the sum of its proper divisors (17346499019).

56121026005 is a wasteful number, since it uses less digits than its factorization.

56121026005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020382307.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 56121026005 in words is "fifty-six billion, one hundred twenty-one million, twenty-six thousand, five".