55606804377807 has 4 divisors (see below), whose sum is σ = 74142405837080. Its totient is φ = 37071202918536.

The previous prime is 55606804377797. The next prime is 55606804377809. The reversal of 55606804377807 is 70877340860655.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55606804377807 - 2²² = 55606800183503 is a prime.

It is a super-2 number, since 2×55606804377807² (a number of 28 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 (55606804377809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9267800729632 + ... + 9267800729637.

It is an arithmetic number, because the mean of its divisors is an integer number (18535601459270).

Almost surely, 2^{55606804377807} is an apocalyptic number.

55606804377807 is a deficient number, since it is larger than the sum of its proper divisors (18535601459273).

55606804377807 is a wasteful number, since it uses less digits than its factorization.

55606804377807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18535601459272.

The product of its (nonzero) digits is 237081600, while the sum is 66.

The spelling of 55606804377807 in words is "fifty-five trillion, six hundred six billion, eight hundred four million, three hundred seventy-seven thousand, eight hundred seven".