77450442744431 has 8 divisors (see below), whose sum is σ = 78249644734800. Its totient is φ = 76651255934208.

The previous prime is 77450442744413. The next prime is 77450442744481. The reversal of 77450442744431 is 13444724405477.

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

It is a cyclic number.

It is not a de Polignac number, because 77450442744431 - 2²² = 77450438550127 is a prime.

It is a super-2 number, since 2×77450442744431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77450442744481) 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, 6608165 + ... + 14091441.

It is an arithmetic number, because the mean of its divisors is an integer number (9781205591850).

Almost surely, 2^{77450442744431} is an apocalyptic number.

77450442744431 is a deficient number, since it is larger than the sum of its proper divisors (799201990369).

77450442744431 is a wasteful number, since it uses less digits than its factorization.

77450442744431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7590073.

The product of its (nonzero) digits is 42147840, while the sum is 56.

The spelling of 77450442744431 in words is "seventy-seven trillion, four hundred fifty billion, four hundred forty-two million, seven hundred forty-four thousand, four hundred thirty-one".