991299416514 has 64 divisors (see below), whose sum is σ = 2231076759552. Its totient is φ = 290987294400.

The previous prime is 991299416507. The next prime is 991299416521. The reversal of 991299416514 is 415614992199.

It is an interprime number because it is at equal distance from previous prime (991299416507) and next prime (991299416521).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339802 + ... + 1448469.

It is an arithmetic number, because the mean of its divisors is an integer number (34860574368).

Almost surely, 2^991299416514 is an apocalyptic number.

991299416514 is an abundant number, since it is smaller than the sum of its proper divisors (1239777343038).

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

991299416514 is a wasteful number, since it uses less digits than its factorization.

991299416514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788551.

The product of its digits is 6298560, while the sum is 60.

The spelling of 991299416514 in words is "nine hundred ninety-one billion, two hundred ninety-nine million, four hundred sixteen thousand, five hundred fourteen".