78148428601651 has 16 divisors (see below), whose sum is σ = 79466149398528. Its totient is φ = 76836921940800.

The previous prime is 78148428601597. The next prime is 78148428601757. The reversal of 78148428601651 is 15610682484187.

It is a cyclic number.

It is not a de Polignac number, because 78148428601651 - 2¹⁷ = 78148428470579 is a prime.

It is a super-2 number, since 2×78148428601651² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78148428601651.

It is not an unprimeable number, because it can be changed into a prime (78148428611651) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58490296 + ... + 59811466.

It is an arithmetic number, because the mean of its divisors is an integer number (4966634337408).

Almost surely, 2^{78148428601651} is an apocalyptic number.

78148428601651 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

78148428601651 is a deficient number, since it is larger than the sum of its proper divisors (1317720796877).

78148428601651 is a wasteful number, since it uses less digits than its factorization.

78148428601651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323522.

The product of its (nonzero) digits is 20643840, while the sum is 61.

The spelling of 78148428601651 in words is "seventy-eight trillion, one hundred forty-eight billion, four hundred twenty-eight million, six hundred one thousand, six hundred fifty-one".