999672026895 has 64 divisors (see below), whose sum is σ = 1871700480000. Its totient is φ = 504835763328.

The previous prime is 999672026833. The next prime is 999672026897. The reversal of 999672026895 is 598620276999.

It is a Cunningham number, because it is equal to 999836²-1.

It is not a de Polignac number, because 999672026895 - 2⁹ = 999672026383 is a prime.

It is a super-2 number, since 2×999672026895² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999672026897) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4899202 + ... + 5099168.

It is an arithmetic number, because the mean of its divisors is an integer number (29245320000).

Almost surely, 2^999672026895 is an apocalyptic number.

999672026895 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

999672026895 is a deficient number, since it is larger than the sum of its proper divisors (872028453105).

999672026895 is a wasteful number, since it uses less digits than its factorization.

999672026895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201949 (or 201943 counting only the distinct ones).

The product of its (nonzero) digits is 264539520, while the sum is 72.

The spelling of 999672026895 in words is "nine hundred ninety-nine billion, six hundred seventy-two million, twenty-six thousand, eight hundred ninety-five".