742578432399 has 24 divisors (see below), whose sum is σ = 1078291122480. Its totient is φ = 492432839808.

The previous prime is 742578432371. The next prime is 742578432457. The reversal of 742578432399 is 993234875247.

742578432399 is a `hidden beast` number, since 7 + 42 + 5 + 78 + 432 + 3 + 99 = 666.

It is not a de Polignac number, because 742578432399 - 2⁸ = 742578432143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742578472399) 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 23 ways as a sum of consecutive naturals, for example, 8625364 + ... + 8711030.

It is an arithmetic number, because the mean of its divisors is an integer number (44928796770).

Almost surely, 2^742578432399 is an apocalyptic number.

742578432399 is a deficient number, since it is larger than the sum of its proper divisors (335712690081).

742578432399 is a wasteful number, since it uses less digits than its factorization.

742578432399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90759 (or 90756 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 63.

The spelling of 742578432399 in words is "seven hundred forty-two billion, five hundred seventy-eight million, four hundred thirty-two thousand, three hundred ninety-nine".