19448072740561 has 8 divisors (see below), whose sum is σ = 20475159253920. Its totient is φ = 18421336600992.

The previous prime is 19448072740541. The next prime is 19448072740573. The reversal of 19448072740561 is 16504727084491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19448072740561 - 2²¹ = 19448070643409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19448072740496 and 19448072740505.

It is not an unprimeable number, because it can be changed into a prime (19448072740541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87479500 + ... + 87701533.

It is an arithmetic number, because the mean of its divisors is an integer number (2559394906740).

Almost surely, 2^{19448072740561} is an apocalyptic number.

It is an amenable number.

19448072740561 is a deficient number, since it is larger than the sum of its proper divisors (1027086513359).

19448072740561 is a wasteful number, since it uses less digits than its factorization.

19448072740561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175186895.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 19448072740561 in words is "nineteen trillion, four hundred forty-eight billion, seventy-two million, seven hundred forty thousand, five hundred sixty-one".