420649155780 has 48 divisors (see below), whose sum is σ = 1346077299840. Its totient is φ = 96148378368.

The previous prime is 420649155749. The next prime is 420649155799. The reversal of 420649155780 is 87551946024.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500772385 + ... + 500773224.

It is an arithmetic number, because the mean of its divisors is an integer number (28043277080).

Almost surely, 2^420649155780 is an apocalyptic number.

It is an amenable number.

420649155780 is an abundant number, since it is smaller than the sum of its proper divisors (925428144060).

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

420649155780 is a wasteful number, since it uses less digits than its factorization.

420649155780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001545628 (or 1001545626 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 420649155780 in words is "four hundred twenty billion, six hundred forty-nine million, one hundred fifty-five thousand, seven hundred eighty".