78152260852436 has 6 divisors (see below), whose sum is σ = 136766456491770. Its totient is φ = 39076130426216.

The previous prime is 78152260852333. The next prime is 78152260852481. The reversal of 78152260852436 is 63425806225187.

It can be written as a sum of positive squares in only one way, i.e., 63031595291536 + 15120665560900 = 7939244^2 + 3888530^2 .

It is a super-2 number, since 2×78152260852436² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9769032606551 + ... + 9769032606558.

It is an arithmetic number, because the mean of its divisors is an integer number (22794409415295).

Almost surely, 2^{78152260852436} is an apocalyptic number.

It is an amenable number.

78152260852436 is a deficient number, since it is larger than the sum of its proper divisors (58614195639334).

78152260852436 is a wasteful number, since it uses less digits than its factorization.

78152260852436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19538065213113 (or 19538065213111 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 59.

The spelling of 78152260852436 in words is "seventy-eight trillion, one hundred fifty-two billion, two hundred sixty million, eight hundred fifty-two thousand, four hundred thirty-six".