70900245441 has 81 divisors (see below), whose sum is σ = 114228889411. Its totient is φ = 42364781184.

The previous prime is 70900245379. The next prime is 70900245443. The reversal of 70900245441 is 14454200907.

It is a happy number.

The square root of 70900245441 is 266271.

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

70900245441 is a `hidden beast` number, since 7 + 0 + 90 + 0 + 24 + 544 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55199153025 + 15701092416 = 234945^2 + 125304^2 .

It is not a de Polignac number, because 70900245441 - 2⁷ = 70900245313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70900245396 and 70900245405.

It is not an unprimeable number, because it can be changed into a prime (70900245443) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 312335770 + ... + 312335996.

Almost surely, 2^70900245441 is an apocalyptic number.

70900245441 is the 266271-st square number.

70900245441 is the 133136-th centered octagonal number.

It is an amenable number.

70900245441 is a deficient number, since it is larger than the sum of its proper divisors (43328643970).

70900245441 is a wasteful number, since it uses less digits than its factorization.

70900245441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Multiplying 70900245441 by its sum of digits (36), we get a square (2552408835876 = 1597626²).

The spelling of 70900245441 in words is "seventy billion, nine hundred million, two hundred forty-five thousand, four hundred forty-one".