74430543551 has 96 divisors (see below), whose sum is σ = 100529428608. Its totient is φ = 53613342720.

The previous prime is 74430543533. The next prime is 74430543623. The reversal of 74430543551 is 15534503447.

It is not a de Polignac number, because 74430543551 - 2¹⁴ = 74430527167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 74430543499 and 74430543508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74430543511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 98322665 + ... + 98323421.

It is an arithmetic number, because the mean of its divisors is an integer number (1047181548).

Almost surely, 2^74430543551 is an apocalyptic number.

74430543551 is a deficient number, since it is larger than the sum of its proper divisors (26098885057).

74430543551 is a wasteful number, since it uses less digits than its factorization.

74430543551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 41.

The spelling of 74430543551 in words is "seventy-four billion, four hundred thirty million, five hundred forty-three thousand, five hundred fifty-one".