421516692994 has 4 divisors (see below), whose sum is σ = 632275039494. Its totient is φ = 210758346496.

The previous prime is 421516692977. The next prime is 421516693007. The reversal of 421516692994 is 499296615124.

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., 367326905625 + 54189787369 = 606075^2 + 232787^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105379173247 + ... + 105379173250.

Almost surely, 2^421516692994 is an apocalyptic number.

421516692994 is a deficient number, since it is larger than the sum of its proper divisors (210758346500).

421516692994 is a wasteful number, since it uses less digits than its factorization.

421516692994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210758346499.

The product of its digits is 8398080, while the sum is 58.

The spelling of 421516692994 in words is "four hundred twenty-one billion, five hundred sixteen million, six hundred ninety-two thousand, nine hundred ninety-four".