74772256866447 has 8 divisors (see below), whose sum is σ = 113938677129856. Its totient is φ = 42727003923672.

The previous prime is 74772256866383. The next prime is 74772256866457. The reversal of 74772256866447 is 74466865227747.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74772256866447 - 2⁶ = 74772256866383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74772256866457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1780291830133 + ... + 1780291830174.

It is an arithmetic number, because the mean of its divisors is an integer number (14242334641232).

Almost surely, 2^{74772256866447} is an apocalyptic number.

74772256866447 is a deficient number, since it is larger than the sum of its proper divisors (39166420263409).

74772256866447 is a wasteful number, since it uses less digits than its factorization.

74772256866447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560583660317.

The product of its digits is 5310627840, while the sum is 75.

The spelling of 74772256866447 in words is "seventy-four trillion, seven hundred seventy-two billion, two hundred fifty-six million, eight hundred sixty-six thousand, four hundred forty-seven".