77249517914 has 8 divisors (see below), whose sum is σ = 115889714388. Its totient is φ = 38619613120.

The previous prime is 77249517907. The next prime is 77249517929. The reversal of 77249517914 is 41971594277.

It can be written as a sum of positive squares in 2 ways, for example, as 72163688689 + 5085829225 = 268633^2 + 71315^2 .

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

It is a super-2 number, since 2×77249517914² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77249517914.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2554127 + ... + 2584194.

Almost surely, 2^77249517914 is an apocalyptic number.

77249517914 is a deficient number, since it is larger than the sum of its proper divisors (38640196474).

77249517914 is a wasteful number, since it uses less digits than its factorization.

77249517914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5145840.

The product of its digits is 4445280, while the sum is 56.

The spelling of 77249517914 in words is "seventy-seven billion, two hundred forty-nine million, five hundred seventeen thousand, nine hundred fourteen".