54721066413 has 16 divisors (see below), whose sum is σ = 82709305280. Its totient is φ = 31902159744.

The previous prime is 54721066381. The next prime is 54721066457. The reversal of 54721066413 is 31466012745.

It is a happy number.

It is not a de Polignac number, because 54721066413 - 2⁵ = 54721066381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54721066493) 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, 36923056 + ... + 36924537.

It is an arithmetic number, because the mean of its divisors is an integer number (5169331580).

Almost surely, 2^54721066413 is an apocalyptic number.

It is an amenable number.

54721066413 is a deficient number, since it is larger than the sum of its proper divisors (27988238867).

54721066413 is a wasteful number, since it uses less digits than its factorization.

54721066413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73847628.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 54721066413 in words is "fifty-four billion, seven hundred twenty-one million, sixty-six thousand, four hundred thirteen".