5119019961644 has 6 divisors (see below), whose sum is σ = 8958284932884. Its totient is φ = 2559509980820.

The previous prime is 5119019961637. The next prime is 5119019961691. The reversal of 5119019961644 is 4461699109115.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5119019961644.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639877495202 + ... + 639877495209.

It is an arithmetic number, because the mean of its divisors is an integer number (1493047488814).

Almost surely, 2^{5119019961644} is an apocalyptic number.

It is an amenable number.

5119019961644 is a deficient number, since it is larger than the sum of its proper divisors (3839264971240).

5119019961644 is a wasteful number, since it uses less digits than its factorization.

5119019961644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279754990415 (or 1279754990413 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 56.

The spelling of 5119019961644 in words is "five trillion, one hundred nineteen billion, nineteen million, nine hundred sixty-one thousand, six hundred forty-four".