55916981439 has 16 divisors (see below), whose sum is σ = 81593658624. Its totient is φ = 33780801600.

The previous prime is 55916981429. The next prime is 55916981467. The reversal of 55916981439 is 93418961955.

It is not a de Polignac number, because 55916981439 - 2⁹ = 55916980927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55916981429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2696467 + ... + 2717124.

It is an arithmetic number, because the mean of its divisors is an integer number (5099603664).

Almost surely, 2^55916981439 is an apocalyptic number.

55916981439 is a deficient number, since it is larger than the sum of its proper divisors (25676677185).

55916981439 is a wasteful number, since it uses less digits than its factorization.

55916981439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413918.

The product of its digits is 10497600, while the sum is 60.

The spelling of 55916981439 in words is "fifty-five billion, nine hundred sixteen million, nine hundred eighty-one thousand, four hundred thirty-nine".