8420134713780 has 48 divisors (see below), whose sum is σ = 23580128275200. Its totient is φ = 2245012011648.

The previous prime is 8420134713721. The next prime is 8420134713791. The reversal of 8420134713780 is 873174310248.

It is a congruent number.

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, 10783555 + ... + 11537994.

It is an arithmetic number, because the mean of its divisors is an integer number (491252672400).

Almost surely, 2^{8420134713780} is an apocalyptic number.

It is an amenable number.

8420134713780 is an abundant number, since it is smaller than the sum of its proper divisors (15159993561420).

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

8420134713780 is a wasteful number, since it uses less digits than its factorization.

8420134713780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22327848 (or 22327846 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 8420134713780 in words is "eight trillion, four hundred twenty billion, one hundred thirty-four million, seven hundred thirteen thousand, seven hundred eighty".