135470371969 has 15 divisors (see below), whose sum is σ = 140352499265. Its totient is φ = 130758061380.

The previous prime is 135470371921. The next prime is 135470371991. The reversal of 135470371969 is 969173074531.

The square root of 135470371969 is 368063.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 135470371969 - 2¹¹ = 135470369921 is a prime.

It is a super-2 number, since 2×135470371969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135470371669) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 353708352 + ... + 353708734.

Almost surely, 2^135470371969 is an apocalyptic number.

135470371969 is the 368063-rd square number.

135470371969 is the 184032-nd centered octagonal number.

It is an amenable number.

135470371969 is a deficient number, since it is larger than the sum of its proper divisors (4882127296).

135470371969 is an frugal number, since it uses more digits than its factorization.

135470371969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 55.

The spelling of 135470371969 in words is "one hundred thirty-five billion, four hundred seventy million, three hundred seventy-one thousand, nine hundred sixty-nine".