74541538545 has 16 divisors (see below), whose sum is σ = 126282136320. Its totient is φ = 37416929024.

The previous prime is 74541538457. The next prime is 74541538567. The reversal of 74541538545 is 54583514547.

It is a cyclic number.

It is not a de Polignac number, because 74541538545 - 2⁷ = 74541538417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146159625 + ... + 146160134.

It is an arithmetic number, because the mean of its divisors is an integer number (7892633520).

Almost surely, 2^74541538545 is an apocalyptic number.

It is an amenable number.

74541538545 is a deficient number, since it is larger than the sum of its proper divisors (51740597775).

74541538545 is a wasteful number, since it uses less digits than its factorization.

74541538545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292319784.

The product of its digits is 6720000, while the sum is 51.

The spelling of 74541538545 in words is "seventy-four billion, five hundred forty-one million, five hundred thirty-eight thousand, five hundred forty-five".