78203670487742 has 32 divisors (see below), whose sum is σ = 120868923168000. Its totient is φ = 37925286481600.

The previous prime is 78203670487717. The next prime is 78203670487763. The reversal of 78203670487742 is 24778407630287.

It is a happy number.

It is a super-2 number, since 2×78203670487742² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56724509 + ... + 58086807.

It is an arithmetic number, because the mean of its divisors is an integer number (3777153849000).

Almost surely, 2^{78203670487742} is an apocalyptic number.

78203670487742 is a deficient number, since it is larger than the sum of its proper divisors (42665252680258).

78203670487742 is a wasteful number, since it uses less digits than its factorization.

78203670487742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366432.

The product of its (nonzero) digits is 177020928, while the sum is 65.

The spelling of 78203670487742 in words is "seventy-eight trillion, two hundred three billion, six hundred seventy million, four hundred eighty-seven thousand, seven hundred forty-two".