54865156484440 has 32 divisors (see below), whose sum is σ = 128813845661280. Its totient is φ = 20991885958912.

The previous prime is 54865156484423. The next prime is 54865156484459. The reversal of 54865156484440 is 4448465156845.

It is a happy number.

It is a super-2 number, since 2×54865156484440² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29818018909 + ... + 29818020748.

It is an arithmetic number, because the mean of its divisors is an integer number (4025432676915).

Almost surely, 2^{54865156484440} is an apocalyptic number.

It is an amenable number.

54865156484440 is an abundant number, since it is smaller than the sum of its proper divisors (73948689176840).

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

54865156484440 is a wasteful number, since it uses less digits than its factorization.

54865156484440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59636039691 (or 59636039687 counting only the distinct ones).

The product of its (nonzero) digits is 294912000, while the sum is 64.

The spelling of 54865156484440 in words is "fifty-four trillion, eight hundred sixty-five billion, one hundred fifty-six million, four hundred eighty-four thousand, four hundred forty".