1226887585878 has 16 divisors (see below), whose sum is σ = 2454032306880. Its totient is φ = 408919672776.

The previous prime is 1226887585843. The next prime is 1226887585967. The reversal of 1226887585878 is 8785857886221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10651908 + ... + 10766471.

It is an arithmetic number, because the mean of its divisors is an integer number (153377019180).

Almost surely, 2^{1226887585878} is an apocalyptic number.

1226887585878 is an abundant number, since it is smaller than the sum of its proper divisors (1227144721002).

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

1226887585878 is a wasteful number, since it uses less digits than its factorization.

1226887585878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21427931.

The product of its digits is 963379200, while the sum is 75.

The spelling of 1226887585878 in words is "one trillion, two hundred twenty-six billion, eight hundred eighty-seven million, five hundred eighty-five thousand, eight hundred seventy-eight".