1975853469915 has 160 divisors (see below), whose sum is σ = 4001081204736. Its totient is φ = 925553122560.

The previous prime is 1975853469913. The next prime is 1975853469949. The reversal of 1975853469915 is 5199643585791.

1975853469915 is a `hidden beast` number, since 1 + 9 + 7 + 585 + 34 + 6 + 9 + 9 + 1 + 5 = 666.

It is not a de Polignac number, because 1975853469915 - 2¹ = 1975853469913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1975853469913) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 23086432 + ... + 23171858.

Almost surely, 2^{1975853469915} is an apocalyptic number.

1975853469915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1975853469915 is an abundant number, since it is smaller than the sum of its proper divisors (2025227734821).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1975853469915 is a wasteful number, since it uses less digits than its factorization.

1975853469915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85671 (or 85662 counting only the distinct ones).

The product of its digits is 367416000, while the sum is 72.

The spelling of 1975853469915 in words is "one trillion, nine hundred seventy-five billion, eight hundred fifty-three million, four hundred sixty-nine thousand, nine hundred fifteen".