145094238887049 has 9 divisors (see below), whose sum is σ = 209580619478503. Its totient is φ = 96729468500352.

The previous prime is 145094238886979. The next prime is 145094238887111. The reversal of 145094238887049 is 940788832490541.

It is a happy number.

The square root of 145094238887049 is 12045507.

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

145094238887049 is a `hidden beast` number, since 1 + 4 + 5 + 0 + 9 + 423 + 88 + 87 + 0 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4375807136649 + 140718431750400 = 2091843^2 + 11862480^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 145094238887049 - 2²⁷ = 145094104669321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145094238887249) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34128937 + ... + 38144105.

Almost surely, 2^{145094238887049} is an apocalyptic number.

145094238887049 is the 12045507-th square number.

145094238887049 is the 6022754-th centered octagonal number.

It is an amenable number.

145094238887049 is a deficient number, since it is larger than the sum of its proper divisors (64486380591454).

145094238887049 is an frugal number, since it uses more digits than its factorization.

145094238887049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030344 (or 4015172 counting only the distinct ones).

The product of its (nonzero) digits is 557383680, while the sum is 72.

The spelling of 145094238887049 in words is "one hundred forty-five trillion, ninety-four billion, two hundred thirty-eight million, eight hundred eighty-seven thousand, forty-nine".