145405405403432 has 8 divisors (see below), whose sum is σ = 272635135131450. Its totient is φ = 72702702701712.

The previous prime is 145405405403429. The next prime is 145405405403483. The reversal of 145405405403432 is 234304504504541.

It can be written as a sum of positive squares in only one way, i.e., 94076692070596 + 51328713332836 = 9699314^2 + 7164406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×145405405403432² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9087837837707 + ... + 9087837837722.

Almost surely, 2^{145405405403432} is an apocalyptic number.

It is an amenable number.

145405405403432 is a deficient number, since it is larger than the sum of its proper divisors (127229729728018).

145405405403432 is a wasteful number, since it uses less digits than its factorization.

145405405403432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18175675675435 (or 18175675675431 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 44.

Adding to 145405405403432 its reverse (234304504504541), we get a palindrome (379709909907973).

The spelling of 145405405403432 in words is "one hundred forty-five trillion, four hundred five billion, four hundred five million, four hundred three thousand, four hundred thirty-two".