77215140451 has 8 divisors (see below), whose sum is σ = 78837005520. Its totient is φ = 75609741312.

The previous prime is 77215140449. The next prime is 77215140481. The reversal of 77215140451 is 15404151277.

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 77215140451 - 2¹ = 77215140449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77215140451.

It is not an unprimeable number, because it can be changed into a prime (77215140481) 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, 4107006 + ... + 4125763.

It is an arithmetic number, because the mean of its divisors is an integer number (9854625690).

Almost surely, 2^77215140451 is an apocalyptic number.

77215140451 is a deficient number, since it is larger than the sum of its proper divisors (1621865069).

77215140451 is a wasteful number, since it uses less digits than its factorization.

77215140451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232965.

The product of its (nonzero) digits is 39200, while the sum is 37.

The spelling of 77215140451 in words is "seventy-seven billion, two hundred fifteen million, one hundred forty thousand, four hundred fifty-one".