78203767407542 has 16 divisors (see below), whose sum is σ = 134074436740512. Its totient is φ = 33513191449920.

The previous prime is 78203767407499. The next prime is 78203767407677. The reversal of 78203767407542 is 24570476730287.

It is a super-2 number, since 2×78203767407542² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225559559 + ... + 225906002.

It is an arithmetic number, because the mean of its divisors is an integer number (8379652296282).

Almost surely, 2^{78203767407542} is an apocalyptic number.

78203767407542 is a deficient number, since it is larger than the sum of its proper divisors (55870669332970).

78203767407542 is a wasteful number, since it uses less digits than its factorization.

78203767407542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451477943.

The product of its (nonzero) digits is 110638080, while the sum is 62.

The spelling of 78203767407542 in words is "seventy-eight trillion, two hundred three billion, seven hundred sixty-seven million, four hundred seven thousand, five hundred forty-two".