78421541602 has 16 divisors (see below), whose sum is σ = 124071660000. Its totient is φ = 37072594080.

The previous prime is 78421541563. The next prime is 78421541647. The reversal of 78421541602 is 20614512487.

It is a super-2 number, since 2×78421541602² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048899 + ... + 2086822.

It is an arithmetic number, because the mean of its divisors is an integer number (7754478750).

Almost surely, 2^78421541602 is an apocalyptic number.

78421541602 is a deficient number, since it is larger than the sum of its proper divisors (45650118398).

78421541602 is a wasteful number, since it uses less digits than its factorization.

78421541602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136241.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 78421541602 in words is "seventy-eight billion, four hundred twenty-one million, five hundred forty-one thousand, six hundred two".