999210776545 has 16 divisors (see below), whose sum is σ = 1240163850240. Its totient is φ = 772062667200.

The previous prime is 999210776539. The next prime is 999210776621. The reversal of 999210776545 is 545677012999.

It is not a de Polignac number, because 999210776545 - 2³ = 999210776537 is a prime.

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, 6253641 + ... + 6411430.

It is an arithmetic number, because the mean of its divisors is an integer number (77510240640).

Almost surely, 2^999210776545 is an apocalyptic number.

It is an amenable number.

999210776545 is a deficient number, since it is larger than the sum of its proper divisors (240953073695).

999210776545 is a wasteful number, since it uses less digits than its factorization.

999210776545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12665616.

The product of its (nonzero) digits is 42865200, while the sum is 64.

The spelling of 999210776545 in words is "nine hundred ninety-nine billion, two hundred ten million, seven hundred seventy-six thousand, five hundred forty-five".