77143341416242 has 4 divisors (see below), whose sum is σ = 115715012124366. Its totient is φ = 38571670708120.

The previous prime is 77143341416213. The next prime is 77143341416243. The reversal of 77143341416242 is 24261414334177.

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

It can be written as a sum of positive squares in only one way, i.e., 70022603938401 + 7120737477841 = 8367951^2 + 2668471^2 .

It is not an unprimeable number, because it can be changed into a prime (77143341416243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19285835354059 + ... + 19285835354062.

Almost surely, 2^{77143341416242} is an apocalyptic number.

77143341416242 is a deficient number, since it is larger than the sum of its proper divisors (38571670708124).

77143341416242 is a wasteful number, since it uses less digits than its factorization.

77143341416242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38571670708123.

The product of its digits is 2709504, while the sum is 49.

The spelling of 77143341416242 in words is "seventy-seven trillion, one hundred forty-three billion, three hundred forty-one million, four hundred sixteen thousand, two hundred forty-two".