55916988629 has 4 divisors (see below), whose sum is σ = 55920953676. Its totient is φ = 55913023584.

The previous prime is 55916988607. The next prime is 55916988641. The reversal of 55916988629 is 92688961955.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19854219025 + 36062769604 = 140905^2 + 189902^2 .

It is a cyclic number.

It is not a de Polignac number, because 55916988629 - 2¹² = 55916984533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55916988229) 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, 1961294 + ... + 1989599.

It is an arithmetic number, because the mean of its divisors is an integer number (13980238419).

Almost surely, 2^55916988629 is an apocalyptic number.

It is an amenable number.

55916988629 is a deficient number, since it is larger than the sum of its proper divisors (3965047).

55916988629 is a wasteful number, since it uses less digits than its factorization.

55916988629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965046.

The product of its digits is 83980800, while the sum is 68.

The spelling of 55916988629 in words is "fifty-five billion, nine hundred sixteen million, nine hundred eighty-eight thousand, six hundred twenty-nine".