55679651897 has 8 divisors (see below), whose sum is σ = 58958937576. Its totient is φ = 52400812032.

The previous prime is 55679651891. The next prime is 55679652043. The reversal of 55679651897 is 79815697655.

It can be written as a sum of positive squares in 4 ways, for example, as 30784807936 + 24894843961 = 175456^2 + 157781^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55679651897 - 2⁸ = 55679651641 is a prime.

It is a super-3 number, since 3×55679651897³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55679651891) 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, 165353 + ... + 372425.

It is an arithmetic number, because the mean of its divisors is an integer number (7369867197).

Almost surely, 2^55679651897 is an apocalyptic number.

It is an amenable number.

55679651897 is a deficient number, since it is larger than the sum of its proper divisors (3279285679).

55679651897 is a wasteful number, since it uses less digits than its factorization.

55679651897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222907.

The product of its digits is 142884000, while the sum is 68.

The spelling of 55679651897 in words is "fifty-five billion, six hundred seventy-nine million, six hundred fifty-one thousand, eight hundred ninety-seven".