878451265611603 has 32 divisors (see below), whose sum is σ = 1383614790842880. Its totient is φ = 549602541876960.

The previous prime is 878451265611599. The next prime is 878451265611617. The reversal of 878451265611603 is 306116562154878.

It is a happy number.

878451265611603 is a `hidden beast` number, since 8 + 7 + 8 + 4 + 5 + 1 + 2 + 6 + 5 + 6 + 11 + 603 = 666.

It is not a de Polignac number, because 878451265611603 - 2² = 878451265611599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (878451265601603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13345017153 + ... + 13345082978.

It is an arithmetic number, because the mean of its divisors is an integer number (43237962213840).

Almost surely, 2^{878451265611603} is an apocalyptic number.

878451265611603 is a deficient number, since it is larger than the sum of its proper divisors (505163525231277).

878451265611603 is a wasteful number, since it uses less digits than its factorization.

878451265611603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26690100216 (or 26690100210 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 878451265611603 in words is "eight hundred seventy-eight trillion, four hundred fifty-one billion, two hundred sixty-five million, six hundred eleven thousand, six hundred three".