19497245881534 has 4 divisors (see below), whose sum is σ = 29245868822304. Its totient is φ = 9748622940766.

The previous prime is 19497245881483. The next prime is 19497245881601. The reversal of 19497245881534 is 43518854279491.

It is a semiprime because it is the product of two primes.

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, 4874311470382 + ... + 4874311470385.

It is an arithmetic number, because the mean of its divisors is an integer number (7311467205576).

Almost surely, 2^{19497245881534} is an apocalyptic number.

19497245881534 is a deficient number, since it is larger than the sum of its proper divisors (9748622940770).

19497245881534 is an equidigital number, since it uses as much as digits as its factorization.

19497245881534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9748622940769.

The product of its digits is 348364800, while the sum is 70.

The spelling of 19497245881534 in words is "nineteen trillion, four hundred ninety-seven billion, two hundred forty-five million, eight hundred eighty-one thousand, five hundred thirty-four".