19497245881506 has 32 divisors (see below), whose sum is σ = 39733081616448. Its totient is φ = 6376001211840.

The previous prime is 19497245881483. The next prime is 19497245881601. The reversal of 19497245881506 is 60518854279491.

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, 2267500 + ... + 6643496.

It is an arithmetic number, because the mean of its divisors is an integer number (1241658800514).

Almost surely, 2^{19497245881506} is an apocalyptic number.

19497245881506 is an abundant number, since it is smaller than the sum of its proper divisors (20235835734942).

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

19497245881506 is a wasteful number, since it uses less digits than its factorization.

19497245881506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390066.

The product of its (nonzero) digits is 174182400, while the sum is 69.

The spelling of 19497245881506 in words is "nineteen trillion, four hundred ninety-seven billion, two hundred forty-five million, eight hundred eighty-one thousand, five hundred six".