78238154674 has 16 divisors (see below), whose sum is σ = 118297617408. Its totient is φ = 38805700752.

The previous prime is 78238154669. The next prime is 78238154699. The reversal of 78238154674 is 47645183287.

It is a super-2 number, since 2×78238154674² (a number of 23 digits) contains 22 as substring.

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, 2339757 + ... + 2372959.

It is an arithmetic number, because the mean of its divisors is an integer number (7393601088).

Almost surely, 2^78238154674 is an apocalyptic number.

78238154674 is a deficient number, since it is larger than the sum of its proper divisors (40059462734).

78238154674 is a wasteful number, since it uses less digits than its factorization.

78238154674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42609.

The product of its digits is 9031680, while the sum is 55.

The spelling of 78238154674 in words is "seventy-eight billion, two hundred thirty-eight million, one hundred fifty-four thousand, six hundred seventy-four".