74642790139778 has 16 divisors (see below), whose sum is σ = 128226206753280. Its totient is φ = 31922982717216.

The previous prime is 74642790139759. The next prime is 74642790139781. The reversal of 74642790139778 is 87793109724647.

It is a super-3 number, since 3×74642790139778³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5565366851 + ... + 5565380262.

It is an arithmetic number, because the mean of its divisors is an integer number (8014137922080).

Almost surely, 2^{74642790139778} is an apocalyptic number.

74642790139778 is a deficient number, since it is larger than the sum of its proper divisors (53583416613502).

74642790139778 is a wasteful number, since it uses less digits than its factorization.

74642790139778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11130747601.

The product of its (nonzero) digits is 896168448, while the sum is 74.

The spelling of 74642790139778 in words is "seventy-four trillion, six hundred forty-two billion, seven hundred ninety million, one hundred thirty-nine thousand, seven hundred seventy-eight".