1564640353475 has 12 divisors (see below), whose sum is σ = 1973038006920. Its totient is φ = 1230496819200.

The previous prime is 1564640353469. The next prime is 1564640353517. The reversal of 1564640353475 is 5743530464651.

It is a happy number.

It is not a de Polignac number, because 1564640353475 - 2⁶ = 1564640353411 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 530385086 + ... + 530388035.

It is an arithmetic number, because the mean of its divisors is an integer number (164419833910).

Almost surely, 2^{1564640353475} is an apocalyptic number.

1564640353475 is a deficient number, since it is larger than the sum of its proper divisors (408397653445).

1564640353475 is a wasteful number, since it uses less digits than its factorization.

1564640353475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060773190 (or 1060773185 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 53.

The spelling of 1564640353475 in words is "one trillion, five hundred sixty-four billion, six hundred forty million, three hundred fifty-three thousand, four hundred seventy-five".