19298961421650 has 96 divisors (see below), whose sum is σ = 53183965740480. Its totient is φ = 5145944031360.

The previous prime is 19298961421609. The next prime is 19298961421679. The reversal of 19298961421650 is 5612416989291.

19298961421650 is a `hidden beast` number, since 1 + 9 + 2 + 9 + 8 + 9 + 614 + 2 + 1 + 6 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15123777 + ... + 16350123.

It is an arithmetic number, because the mean of its divisors is an integer number (553999643130).

Almost surely, 2^{19298961421650} is an apocalyptic number.

19298961421650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19298961421650 is an abundant number, since it is smaller than the sum of its proper divisors (33885004318830).

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

19298961421650 is a wasteful number, since it uses less digits than its factorization.

19298961421650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238025 (or 1238014 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 19298961421650 in words is "nineteen trillion, two hundred ninety-eight billion, nine hundred sixty-one million, four hundred twenty-one thousand, six hundred fifty".