78140925734 has 8 divisors (see below), whose sum is σ = 117284788128. Its totient is φ = 39045996360.

The previous prime is 78140925703. The next prime is 78140925769. The reversal of 78140925734 is 43752904187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78140925734² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12229262 + ... + 12235649.

It is an arithmetic number, because the mean of its divisors is an integer number (14660598516).

Almost surely, 2^78140925734 is an apocalyptic number.

78140925734 is a deficient number, since it is larger than the sum of its proper divisors (39143862394).

78140925734 is a wasteful number, since it uses less digits than its factorization.

78140925734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24466510.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 78140925734 in words is "seventy-eight billion, one hundred forty million, nine hundred twenty-five thousand, seven hundred thirty-four".