413021009978 has 4 divisors (see below), whose sum is σ = 619531514970. Its totient is φ = 206510504988.

The previous prime is 413021009977. The next prime is 413021010007. The reversal of 413021009978 is 879900120314.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 380939543209 + 32081466769 = 617203^2 + 179113^2 .

It is not an unprimeable number, because it can be changed into a prime (413021009971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103255252493 + ... + 103255252496.

Almost surely, 2^413021009978 is an apocalyptic number.

413021009978 is a deficient number, since it is larger than the sum of its proper divisors (206510504992).

413021009978 is a wasteful number, since it uses less digits than its factorization.

413021009978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206510504991.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 413021009978 in words is "four hundred thirteen billion, twenty-one million, nine thousand, nine hundred seventy-eight".