55507948479669 has 32 divisors (see below), whose sum is σ = 86716089078784. Its totient is φ = 30921942844800.

The previous prime is 55507948479631. The next prime is 55507948479679. The reversal of 55507948479669 is 96697484970555.

It is not a de Polignac number, because 55507948479669 - 2²⁸ = 55507680044213 is a prime.

It is a super-2 number, since 2×55507948479669² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55507948479591 and 55507948479600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55507948479679) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58295032 + ... + 59239569.

It is an arithmetic number, because the mean of its divisors is an integer number (2709877783712).

Almost surely, 2^{55507948479669} is an apocalyptic number.

It is an amenable number.

55507948479669 is a deficient number, since it is larger than the sum of its proper divisors (31208140599115).

55507948479669 is a wasteful number, since it uses less digits than its factorization.

55507948479669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117535177.

The product of its (nonzero) digits is 20575296000, while the sum is 84.

The spelling of 55507948479669 in words is "fifty-five trillion, five hundred seven billion, nine hundred forty-eight million, four hundred seventy-nine thousand, six hundred sixty-nine".