699142910491 has 16 divisors (see below), whose sum is σ = 738691401760. Its totient is φ = 659872604160.

The previous prime is 699142910423. The next prime is 699142910507. The reversal of 699142910491 is 194019241996.

It is a cyclic number.

It is not a de Polignac number, because 699142910491 - 2³³ = 690552975899 is a prime.

It is a super-2 number, since 2×699142910491² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (699142910891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8417035 + ... + 8499691.

It is an arithmetic number, because the mean of its divisors is an integer number (46168212610).

Almost surely, 2^699142910491 is an apocalyptic number.

699142910491 is a deficient number, since it is larger than the sum of its proper divisors (39548491269).

699142910491 is a wasteful number, since it uses less digits than its factorization.

699142910491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84334.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The spelling of 699142910491 in words is "six hundred ninety-nine billion, one hundred forty-two million, nine hundred ten thousand, four hundred ninety-one".