55507747899 has 8 divisors (see below), whose sum is σ = 74011594752. Its totient is φ = 37004533160.

The previous prime is 55507747879. The next prime is 55507747921. The reversal of 55507747899 is 99874770555.

It is a happy number.

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 55507747899 - 2¹¹ = 55507745851 is a prime.

It is a super-2 number, since 2×55507747899² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55507747879) 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, 113542 + ... + 352004.

It is an arithmetic number, because the mean of its divisors is an integer number (9251449344).

Almost surely, 2^55507747899 is an apocalyptic number.

55507747899 is a deficient number, since it is larger than the sum of its proper divisors (18503846853).

55507747899 is a wasteful number, since it uses less digits than its factorization.

55507747899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316057.

The product of its (nonzero) digits is 111132000, while the sum is 66.

The spelling of 55507747899 in words is "fifty-five billion, five hundred seven million, seven hundred forty-seven thousand, eight hundred ninety-nine".