420977216249 has 4 divisors (see below), whose sum is σ = 424911582864. Its totient is φ = 417042849636.

The previous prime is 420977216239. The next prime is 420977216273. The reversal of 420977216249 is 942612779024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420977216249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420977216249.

It is not an unprimeable number, because it can be changed into a prime (420977216239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1967183147 + ... + 1967183360.

It is an arithmetic number, because the mean of its divisors is an integer number (106227895716).

Almost surely, 2^420977216249 is an apocalyptic number.

It is an amenable number.

420977216249 is a deficient number, since it is larger than the sum of its proper divisors (3934366615).

420977216249 is a wasteful number, since it uses less digits than its factorization.

420977216249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3934366614.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 420977216249 in words is "four hundred twenty billion, nine hundred seventy-seven million, two hundred sixteen thousand, two hundred forty-nine".