54142906815 has 64 divisors (see below), whose sum is σ = 97673748480. Its totient is φ = 28451139840.

The previous prime is 54142906813. The next prime is 54142906819. The reversal of 54142906815 is 51860924145.

54142906815 is a `hidden beast` number, since 541 + 4 + 2 + 90 + 6 + 8 + 15 = 666.

It is not a de Polignac number, because 54142906815 - 2¹ = 54142906813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54142906813) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12129274 + ... + 12133736.

It is an arithmetic number, because the mean of its divisors is an integer number (1526152320).

Almost surely, 2^54142906815 is an apocalyptic number.

54142906815 is a deficient number, since it is larger than the sum of its proper divisors (43530841665).

54142906815 is a wasteful number, since it uses less digits than its factorization.

54142906815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5781 (or 5775 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 54142906815 in words is "fifty-four billion, one hundred forty-two million, nine hundred six thousand, eight hundred fifteen".