69890134780 has 48 divisors (see below), whose sum is σ = 149599850400. Its totient is φ = 27420484608.

The previous prime is 69890134777. The next prime is 69890134807. The reversal of 69890134780 is 8743109896.

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, 200296 + ... + 424144.

It is an arithmetic number, because the mean of its divisors is an integer number (3116663550).

Almost surely, 2^69890134780 is an apocalyptic number.

It is an amenable number.

69890134780 is an abundant number, since it is smaller than the sum of its proper divisors (79709715620).

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

69890134780 is a wasteful number, since it uses less digits than its factorization.

69890134780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224158 (or 224156 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 69890134780 in words is "sixty-nine billion, eight hundred ninety million, one hundred thirty-four thousand, seven hundred eighty".