999868943754 has 40 divisors (see below), whose sum is σ = 2240517172608. Its totient is φ = 333279220680.

The previous prime is 999868943713. The next prime is 999868943771. The reversal of 999868943754 is 457349868999.

999868943754 is a `hidden beast` number, since 9 + 99 + 86 + 89 + 4 + 375 + 4 = 666.

999868943754 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×999868943754² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6472839 + ... + 6625509.

Almost surely, 2^999868943754 is an apocalyptic number.

999868943754 is an abundant number, since it is smaller than the sum of its proper divisors (1240648228854).

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

999868943754 is a wasteful number, since it uses less digits than its factorization.

999868943754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193112 (or 193103 counting only the distinct ones).

The product of its digits is 4232632320, while the sum is 81.

The spelling of 999868943754 in words is "nine hundred ninety-nine billion, eight hundred sixty-eight million, nine hundred forty-three thousand, seven hundred fifty-four".