421013012551 has 8 divisors (see below), whose sum is σ = 435123451008. Its totient is φ = 406935660000.

The previous prime is 421013012477. The next prime is 421013012579. The reversal of 421013012551 is 155210310124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421013012551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421013012051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8245600 + ... + 8296501.

It is an arithmetic number, because the mean of its divisors is an integer number (54390431376).

Almost surely, 2^421013012551 is an apocalyptic number.

421013012551 is a deficient number, since it is larger than the sum of its proper divisors (14110438457).

421013012551 is a wasteful number, since it uses less digits than its factorization.

421013012551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16542953.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 421013012551 its reverse (155210310124), we get a palindrome (576223322675).

The spelling of 421013012551 in words is "four hundred twenty-one billion, thirteen million, twelve thousand, five hundred fifty-one".