78447206100 has 36 divisors (see below), whose sum is σ = 226973917184. Its totient is φ = 20919254880.

The previous prime is 78447206029. The next prime is 78447206107. The reversal of 78447206100 is 160274487.

It is a super-4 number, since 4×78447206100⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78447206107) 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, 130745044 + ... + 130745643.

Almost surely, 2^78447206100 is an apocalyptic number.

It is an amenable number.

78447206100 is an abundant number, since it is smaller than the sum of its proper divisors (148526711084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78447206100 is a wasteful number, since it uses less digits than its factorization.

78447206100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261490704 (or 261490697 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 78447206100 in words is "seventy-eight billion, four hundred forty-seven million, two hundred six thousand, one hundred".