1051985908523 has 8 divisors (see below), whose sum is σ = 1147632844800. Its totient is φ = 956340947880.

The previous prime is 1051985908513. The next prime is 1051985908541. The reversal of 1051985908523 is 3258095891501.

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 1051985908523 - 2⁴ = 1051985908507 is a prime.

It is a super-2 number, since 2×1051985908523² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051985908513) 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, 757286 + ... + 1636292.

It is an arithmetic number, because the mean of its divisors is an integer number (143454105600).

Almost surely, 2^{1051985908523} is an apocalyptic number.

1051985908523 is a deficient number, since it is larger than the sum of its proper divisors (95646936277).

1051985908523 is a wasteful number, since it uses less digits than its factorization.

1051985908523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987817.

The product of its (nonzero) digits is 3888000, while the sum is 56.

The spelling of 1051985908523 in words is "one trillion, fifty-one billion, nine hundred eighty-five million, nine hundred eight thousand, five hundred twenty-three".