77834012332442 has 4 divisors (see below), whose sum is σ = 116751018498666. Its totient is φ = 38917006166220.

The previous prime is 77834012332421. The next prime is 77834012332463. The reversal of 77834012332442 is 24423321043877.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (77834012332421) and next prime (77834012332463).

It can be written as a sum of positive squares in only one way, i.e., 47803382172001 + 30030630160441 = 6913999^2 + 5480021^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19458503083109 + ... + 19458503083112.

Almost surely, 2^{77834012332442} is an apocalyptic number.

77834012332442 is a deficient number, since it is larger than the sum of its proper divisors (38917006166224).

77834012332442 is a wasteful number, since it uses less digits than its factorization.

77834012332442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38917006166223.

The product of its (nonzero) digits is 5419008, while the sum is 50.

The spelling of 77834012332442 in words is "seventy-seven trillion, eight hundred thirty-four billion, twelve million, three hundred thirty-two thousand, four hundred forty-two".