1649249847475 has 24 divisors (see below), whose sum is σ = 2049780555648. Its totient is φ = 1316362924800.

The previous prime is 1649249847463. The next prime is 1649249847523. The reversal of 1649249847475 is 5747489429461.

It is not a de Polignac number, because 1649249847475 - 2¹⁹ = 1649249323187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31040382 + ... + 31093468.

It is an arithmetic number, because the mean of its divisors is an integer number (85407523152).

Almost surely, 2^{1649249847475} is an apocalyptic number.

1649249847475 is a deficient number, since it is larger than the sum of its proper divisors (400530708173).

1649249847475 is a wasteful number, since it uses less digits than its factorization.

1649249847475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55935 (or 55930 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 70.

The spelling of 1649249847475 in words is "one trillion, six hundred forty-nine billion, two hundred forty-nine million, eight hundred forty-seven thousand, four hundred seventy-five".