68890209654 has 48 divisors (see below), whose sum is σ = 161336710656. Its totient is φ = 19552554000.

The previous prime is 68890209643. The next prime is 68890209679. The reversal of 68890209654 is 45690209886.

It is a junction number, because it is equal to n+sod(n) for n = 68890209594 and 68890209603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 731502 + ... + 820289.

It is an arithmetic number, because the mean of its divisors is an integer number (3361181472).

Almost surely, 2^68890209654 is an apocalyptic number.

68890209654 is an abundant number, since it is smaller than the sum of its proper divisors (92446501002).

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

68890209654 is a wasteful number, since it uses less digits than its factorization.

68890209654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551961 (or 1551954 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 68890209654 in words is "sixty-eight billion, eight hundred ninety million, two hundred nine thousand, six hundred fifty-four".