20347261496 has 8 divisors (see below), whose sum is σ = 38151115320. Its totient is φ = 10173630744.

The previous prime is 20347261477. The next prime is 20347261531. The reversal of 20347261496 is 69416274302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20347261496² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271703836 + ... + 1271703851.

It is an arithmetic number, because the mean of its divisors is an integer number (4768889415).

Almost surely, 2^20347261496 is an apocalyptic number.

It is an amenable number.

20347261496 is a deficient number, since it is larger than the sum of its proper divisors (17803853824).

20347261496 is a wasteful number, since it uses less digits than its factorization.

20347261496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543407693 (or 2543407689 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 20347261496 in words is "twenty billion, three hundred forty-seven million, two hundred sixty-one thousand, four hundred ninety-six".