78156025657803 has 12 divisors (see below), whose sum is σ = 113092555784520. Its totient is φ = 52011470002176.

The previous prime is 78156025657777. The next prime is 78156025657903. The reversal of 78156025657803 is 30875652065187.

78156025657803 is a `hidden beast` number, since 7 + 8 + 1 + 5 + 6 + 0 + 2 + 56 + 578 + 0 + 3 = 666.

It is not a de Polignac number, because 78156025657803 - 2⁶ = 78156025657739 is a prime.

It is a super-2 number, since 2×78156025657803² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (78156025657903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7712253238 + ... + 7712263371.

It is an arithmetic number, because the mean of its divisors is an integer number (9424379648710).

Almost surely, 2^{78156025657803} is an apocalyptic number.

78156025657803 is a deficient number, since it is larger than the sum of its proper divisors (34936530126717).

78156025657803 is a wasteful number, since it uses less digits than its factorization.

78156025657803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15424517178 (or 15424517175 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 63.

The spelling of 78156025657803 in words is "seventy-eight trillion, one hundred fifty-six billion, twenty-five million, six hundred fifty-seven thousand, eight hundred three".