54780156617949 has 72 divisors (see below), whose sum is σ = 96068401852800. Its totient is φ = 29459970473472.

The previous prime is 54780156617947. The next prime is 54780156617959. The reversal of 54780156617949 is 94971665108745.

54780156617949 is a `hidden beast` number, since 5 + 4 + 7 + 8 + 0 + 1 + 566 + 17 + 9 + 49 = 666.

It is not a de Polignac number, because 54780156617949 - 2¹ = 54780156617947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54780156617947) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 376684752 + ... + 376830150.

Almost surely, 2^{54780156617949} is an apocalyptic number.

It is an amenable number.

54780156617949 is a deficient number, since it is larger than the sum of its proper divisors (41288245234851).

54780156617949 is a wasteful number, since it uses less digits than its factorization.

54780156617949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166139 (or 166119 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 72.

The spelling of 54780156617949 in words is "fifty-four trillion, seven hundred eighty billion, one hundred fifty-six million, six hundred seventeen thousand, nine hundred forty-nine".