78775498142 has 16 divisors (see below), whose sum is σ = 129384572400. Its totient is φ = 35673930240.

The previous prime is 78775498099. The next prime is 78775498223. The reversal of 78775498142 is 24189457787.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6649667 + ... + 6661502.

It is an arithmetic number, because the mean of its divisors is an integer number (8086535775).

Almost surely, 2^78775498142 is an apocalyptic number.

78775498142 is a deficient number, since it is larger than the sum of its proper divisors (50609074258).

78775498142 is a wasteful number, since it uses less digits than its factorization.

78775498142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13311451.

The product of its digits is 31610880, while the sum is 62.

The spelling of 78775498142 in words is "seventy-eight billion, seven hundred seventy-five million, four hundred ninety-eight thousand, one hundred forty-two".