549376061640 has 1536 divisors, whose sum is σ = 2264993280000. Its totient is φ = 105833226240.

The previous prime is 549376061579. The next prime is 549376061687. The reversal of 549376061640 is 46160673945.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 12776187459 + ... + 12776187501.

It is an arithmetic number, because the mean of its divisors is an integer number (1474605000).

Almost surely, 2^549376061640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549376061640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132496640000).

549376061640 is an abundant number, since it is smaller than the sum of its proper divisors (1715617218360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549376061640 is a wasteful number, since it uses less digits than its factorization.

549376061640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 549376061640 in words is "five hundred forty-nine billion, three hundred seventy-six million, sixty-one thousand, six hundred forty".