28399713016550 has 48 divisors (see below), whose sum is σ = 52941534118704. Its totient is φ = 11334497520000.

The previous prime is 28399713016541. The next prime is 28399713016601. The reversal of 28399713016550 is 5561031799382.

It is a self number, because there is not a number n which added to its sum of digits gives 28399713016550.

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, 466985645 + ... + 467046455.

It is an arithmetic number, because the mean of its divisors is an integer number (1102948627473).

Almost surely, 2^{28399713016550} is an apocalyptic number.

28399713016550 is a deficient number, since it is larger than the sum of its proper divisors (24541821102154).

28399713016550 is a wasteful number, since it uses less digits than its factorization.

28399713016550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81545 (or 81540 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 59.

The spelling of 28399713016550 in words is "twenty-eight trillion, three hundred ninety-nine billion, seven hundred thirteen million, sixteen thousand, five hundred fifty".