77121072416451 has 8 divisors (see below), whose sum is σ = 117517824634624. Its totient is φ = 44069184237960.

The previous prime is 77121072416413. The next prime is 77121072416483. The reversal of 77121072416451 is 15461427012177.

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

It is not a de Polignac number, because 77121072416451 - 2¹⁷ = 77121072285379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77121072416451.

It is not an unprimeable number, because it can be changed into a prime (77121072416491) 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, 1836216009895 + ... + 1836216009936.

It is an arithmetic number, because the mean of its divisors is an integer number (14689728079328).

Almost surely, 2^{77121072416451} is an apocalyptic number.

77121072416451 is a deficient number, since it is larger than the sum of its proper divisors (40396752218173).

77121072416451 is a wasteful number, since it uses less digits than its factorization.

77121072416451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672432019841.

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 77121072416451 in words is "seventy-seven trillion, one hundred twenty-one billion, seventy-two million, four hundred sixteen thousand, four hundred fifty-one".