78154351562 has 16 divisors (see below), whose sum is σ = 134563954560. Its totient is φ = 33348455568.

The previous prime is 78154351547. The next prime is 78154351573. The reversal of 78154351562 is 26515345187.

It is a super-2 number, since 2×78154351562² (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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12185558 + ... + 12191969.

It is an arithmetic number, because the mean of its divisors is an integer number (8410247160).

Almost surely, 2^78154351562 is an apocalyptic number.

78154351562 is a deficient number, since it is larger than the sum of its proper divisors (56409602998).

78154351562 is a wasteful number, since it uses less digits than its factorization.

78154351562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24377765.

The product of its digits is 1008000, while the sum is 47.

The spelling of 78154351562 in words is "seventy-eight billion, one hundred fifty-four million, three hundred fifty-one thousand, five hundred sixty-two".