78034781434 has 16 divisors (see below), whose sum is σ = 121936573440. Its totient is φ = 37412351280.

The previous prime is 78034781417. The next prime is 78034781467. The reversal of 78034781434 is 43418743087.

It is a happy number.

It is a super-2 number, since 2×78034781434² (a number of 23 digits) contains 22 as substring.

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, 5766754 + ... + 5780269.

It is an arithmetic number, because the mean of its divisors is an integer number (7621035840).

Almost surely, 2^78034781434 is an apocalyptic number.

78034781434 is a deficient number, since it is larger than the sum of its proper divisors (43901792006).

78034781434 is a wasteful number, since it uses less digits than its factorization.

78034781434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11547165.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 78034781434 in words is "seventy-eight billion, thirty-four million, seven hundred eighty-one thousand, four hundred thirty-four".