54145222461 has 24 divisors (see below), whose sum is σ = 89029302336. Its totient is φ = 31388533440.

The previous prime is 54145222459. The next prime is 54145222471. The reversal of 54145222461 is 16422254145.

54145222461 is a `hidden beast` number, since 54 + 1 + 4 + 522 + 24 + 61 = 666.

It is not a de Polignac number, because 54145222461 - 2¹ = 54145222459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54145222471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11887320 + ... + 11891873.

It is an arithmetic number, because the mean of its divisors is an integer number (3709554264).

Almost surely, 2^54145222461 is an apocalyptic number.

It is an amenable number.

54145222461 is a deficient number, since it is larger than the sum of its proper divisors (34884079875).

54145222461 is a wasteful number, since it uses less digits than its factorization.

54145222461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23779233 (or 23779230 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The spelling of 54145222461 in words is "fifty-four billion, one hundred forty-five million, two hundred twenty-two thousand, four hundred sixty-one".